What changed in AirMech in 2016
330 updates · 7 main milestones · Jan 31, 2016 to Jul 8, 2016
- 40 eventsFixed Exiting a Lobby via Gear Iconbug fixSteamFixed Lobby Exit via Gear Iconbug fixSteamMap Tweaks for Warzonegameplay
Various changes to Warzone maps including The Great Wall and Highway to Hell.
SteamFixed Low Framerate on Login Menubug fixSteamFixed Infantry Falling Through Terrainbug fixIssue resolved at the Southern outpost on The Keep.
SteamVoid Units Are Much Strongerbalance changeSteamFixed Transforming Issues on Dogs of Warbug fixSteamFixed Fourth of July Set Not Being Searchablebug fixSteamAdded Difficulty Selection to Warzone MenugameplaySteamRuthless Difficulty Adjustmentsbalance changeMilestoneInsane damage and HP scalers for THE IRON HAND at maximum difficulty with a huge score multiplier.
SteamFixed Rocketeer Animation When Occupying an Outpostbug fixSteamIntroduction of IRON 1 AInew contentPlay against the notorious IRON 1 in the toughest AI Versus battles.
SteamFixed Floating Assets on Warzone Mapsbug fixSteamMap Tweaks for WarzonegameplayVarious changes to Warzone maps including The Great Wall and Highway to Hell.
SteamDifficulty Amnesty for AllgameplaySelect ANY difficulty in any map without leveling your smurf.
SteamIRON 1 Added to AI Versus Battlesnew contentPlay against the notorious IRON 1 in the toughest AI battles.
SteamFixed Exiting to Lobby After Spectating or Playing a Tutorial Mapbug fixSteamNew SATCOMM and IRON HAND Chat Badgesnew contentWin any WarZone map for a chance at new chat badges.
SteamTweaks for Scoring in Warzonebalance changeSteamRemoved Automatic Difficulty Selectionbalance changeSteamFixed Infantry Falling Through Terrain on The Keepbug fixSteamNew SATCOMM and IRON HAND Chat Badgesnew contentWin any WarZone map for a chance at new chat badges.
SteamFixed Floating Assets on Some Warzone Mapsbug fixSteamFixed Map Publishing for AirMech Prime Booster Ownersbug fixAdded additional error messages for future issues.
SteamFixed Rocketeer Animation When Occupying Outpostbug fixSteamFixed Low Framerate on Login Menubug fixSteamNew 5 Star Map Completion and Universal Difficultynew contentSelect difficulty right in your WarZone tac display, see it during matches, and map completion stars correspond to the 5 difficulty levels.
SteamNew 5 Star Map Completion and Universal Difficultynew contentSelect difficulty right in your WarZone tac display, see it during matches, and map completion stars correspond to 5 difficulty levels.
SteamFixed Names Being Cut Off on Leaderboardsbug fixSteamDifficulty Amnesty for AllgameplaySelect ANY difficulty in any map without needing to level your smurf.
SteamFixed Transforming Issues on Dogs of Warbug fixSteamFixed Exiting to Lobby Issuesbug fixResolved issues after spectating, map editing, or playing a tutorial map.
SteamFixed Map Publishing for AirMech Prime Booster Ownersbug fixAdded additional error messages for any future issues.
SteamRuthless is No Longer Toothlessbalance changeMilestoneInsane damage and HP scalers for THE IRON HAND at maximum difficulty with a huge score multiplier.
SteamFixed Fourth of July Set Not Being Searchablebug fixSteamFixed Names Being Cut Off on Leaderboardsbug fixSteam - 43 eventsSeven new Warzone maps addednew contentMilestone
New maps will rotate daily, with special items available for skilled players.
SteamFixed Alignment with Twin Peaks' Minimap Viewboxbug fixSteamFix for clicking timed quest notification outside Home tabbug fixSteamFix for enemy wave spawns on Challenge 10bug fixSteamBuster attack range increased from 18 to 19balance changeSteamFixed Blueprints link (was renamed from Skills)bug fixSteamFix for Enemy Wave Spawns on Challenge 10bug fixSteamOsprey Heal Beam Repair Rate Decreased by 20%balance changeSteamFixed collision issues and floating assets on Challenge mapsbug fixSteamSlight Delay Before Victory is Shown at Endgameui uxSteamNew One-Time Purchase Bundles Addednew contentSteamHelix Missile Damage Decreased from 60 to 50balance changeSteamOsprey heal beam repair rate decreased by 20%balance changeSteamFix for Baloom Not Triggering Explosionbug fixSteamFix for Clicking Timed Quest Notification Outside Home Tabbug fixSteamNew Iron Hand Bomber for Login Menunew contentSteamNew Iron Hand Bomber for login menunew contentSteamOsprey Carry Capacity Increased from 2380 to 2540balance changeSteamAdded leaderboard notifications at endgameui uxSteamFixed Blueprints Link Renamed from Skillsbug fixSteamFixed Collision Issues and Floating Assets on Challenge Mapsbug fixSteamHelix missile damage decreased from 60 to 50balance changeSteamJackal Build Cost Increased from 2500 to 3000balance changeSteamHelix Carry Capacity Increased from 2380 to 2540balance changeSteamSeven New Warzone Maps on Daily Rotationnew contentNew maps will be available one at a time throughout the week.
SteamUber PowerUps Found on Warzone Mapsnew contentThese PowerUps greatly increase the strength of your primary ability.
SteamFixed Missing Compliance Stat in the Field Guidebug fixSteamJackal Upkeep Decreased from 2 to 1balance changeSteamSlight delay before victory is shown at endgameui uxSteamFix for Baloom not triggering explosionbug fixBaloom now properly triggers an explosion when passing over an enemy mech.
SteamBuster armor decreased from 60 to 55balance changeSteamFixed alignment with Twin Peaks' minimap viewboxbug fixSteamBuster Armor Decreased from 60 to 55balance changeSteamLeaderboard Notifications Added at Endgameui uxSteamBuster Attack Range Increased from 18 to 19balance changeSteamWeekly Leaderboards for New Warzone Mapsnew contentSteamHelix carry capacity increased from 2380 to 2540balance changeSteamJackal build cost increased from 2500 to 3000balance changeSteamJackal upkeep decreased from 2 to 1balance changeSteamOsprey carry capacity increased from 2380 to 2540balance changeSteamFixed missing Compliance stat in the Field Guidebug fixSteam - 63 eventsIcons for Trials Added in Pregame Lobbyui uxSteamTitle System for Leaderboard Champions Introducednew contentSteamFixed Automatically Terminating Units in Warzonebug fixSteamFixed Roller Not Unlatching from ElevatorotherSteamFixed Broken Combos MenuotherSteamQuests Button Moved in Main Menuui ux
Relocated the Quests button to the bottom of the main menu.
SteamFixed Link Command on Units with Deploy Animation Delaybug fixSteamCredit Value Added for Safebox and Vaultbox When Pre-PlacedotherSteamFixed Skybox Selection Overwriting Pregame TimerotherSteamPromos Button Renamed to Newsui uxSteamFixed AI Building Void Unitsbug fixSteamFixed Shadow Rendering When Zooming Inbug fixSteamMap Editor Auto-Save Feature AddedotherMaps will now save automatically in the event of a disconnect.
SteamFixed Abducted Bot Spawner Producing Creepbug fixSteamDefault Leaderboards UI Set to Weeklyui uxChanged default view from Factions to Weekly when opening Leaderboards UI.
SteamFix for Neutral Necro Reviving Unitsbug fixSteamCredit Cap Messages Limited to Reduce Spamquality of lifeSteamFixed Game Location Position Field Editing IssueotherSteamGame Modes RenamedchangesSkirmish is now Versus, Survival mode is now Warzone, Ranked is now Skills, and Unranked is now Unlimited.
SteamSkills Tab Renamed to Blueprintsui uxSteamIron Hand Dialog Added to Warzone Mapsnew contentSteamFix for Melee Units Not Attacking Enemy Fortressbug fixSteamFix for CTF Cores Pickup Indicatorbug fixSteamFixed Pickup Indicator Not Displaying for CTF Coresbug fixSteamImproved Heal Nova Animation for OspreyvisualsSteamImproved Heal Nova Animation for OspreyvisualsSteamFixed Game Messages Displayed While EditingotherSteamFixed Quests Button Display Issuebug fixSteamTweaks to Endgame Victory MedalvisualsSteamIron Hand Dialog Added to Warzone Mapsnew contentSteamFixed Melee Units Not Attacking Enemy Fortressbug fixSteamDeploy Arm Enabled Option Addednew contentAdded a setting to enable or disable the deploy arm for advanced users.
SteamTitle System for Leaderboard Champions Introducednew contentSteamFixed Shadow Rendering on Oversized Propsbug fixSteamFix for Link Command on Units with Deploy Animation Delaybug fixSteamGame Modes RenamedchangesSkirmish is now Versus, Survival mode is now Warzone, Ranked is now Skills, and Unranked is now Unlimited.
SteamFix for AI Building Void Unitsbug fixSteamDifficulty Settings with Reward Modifiers Added to Warzonenew contentSteamFixed Neutral Necro Reviving UnitsotherSteamVariation Added to Striker Sword AudioaudioSteamFixed Alignment of Promos Launched from News Buttonbug fixSteamDeploy Arm Enabled Option Addednew contentAdded a setting to enable or disable the deploy arm for advanced users.
SteamQuests Button Moved in Main Menuui uxRelocated the Quests button to the bottom of the main menu.
SteamFixed Scripted Game Messages Not Appearing in Player-Made MapsotherSteamFix for Quests Button Display Issuebug fixSteamPromos Button Renamed to Newsui uxSteamFixed Flier Separation Not Applying to Neutral Unitsbug fixSteamSkills Tab Renamed to Blueprintsui uxSteamFixes for AirMech Animation Bugsbug fixSteamFix for Shadow Rendering When Zooming Inbug fixSteamFixed Picking Up CTF Cores Over Fortressbug fixSteamFixed AirMech Animation Bugsbug fixSteamFixed Item Icons Not Showing on Market Purchase Dialogbug fixSteamDefault Leaderboards UI Set to Weeklyui uxChanged default view from Factions to Weekly when opening Leaderboards.
SteamTerrain Panel RearrangedotherSteamAdded Radio Buttons for Edging, Elevation, and Paint MatotherSteamPilot Icons Added for In-Game Messagesui uxSteamDifficulty Settings with Reward Modifiers Added to Warzonenew contentSteam - 72 eventsNew textures for some neutral unitsnew contentSteamFixed some artillery units appearing un-deployedbug fixSteamAdded dialog for publishing mapsotherSteamUpdated prop iconsotherSteamCustom maps respect capitalization in load map windowotherSteamFixed tooltips for NoColor and gold plated itemsbug fixSteamAdded support for event and variable parameters in move location to unit scriptotherSteamMap scripts will now run on all game modesotherSteamMap scripts will now run on all game modesotherSteamAdded support for placing PowerUps and prop CombosotherSteamAdded script command for disabling energy regenotherSteamFix for Sonya and Dinger radar spinning animationsbug fixSteamFixed an audio related crashbug fixMilestoneSteamFixed a bug that caused the suggested content dialog to be misalignedbug fixSteamAdded script condition to compare current energy of an AirMechotherSteamNew recurring PvP Quests in Daily sectionnew contentSteamAdded a new victory dialog at the end of a matchgameplaySteamIncreased rewards for Last StandgameplaySteamAdded Confirm dialog for New and Publish optionsotherSteamSuggested content dialog will only show on defeatgameplaySteamUpdated prop iconsotherSteamFix for displayed ping values showing incorrectlybug fixSteamShooter no longer fires at air targetsbalance changeSteamFixed Boomer capturing outpostsbug fixSteamAdded script command for disabling health regenotherSteamAdded facing/rotation property to unit spawn script commandotherSteamIncreased Upkeep from Survival structures in multiplayer matchesbalance changeSteamAdded a new victory dialog at the end of a matchgameplaySteamFixed a bug that could cause players to be stuck in the Basecamp tutorialbug fixSteamFixed audio related crashbug fixMilestoneSteamAdded script condition to compare current energy of an AirMechotherSteamAdded script command for disabling health regenotherSteamAdded dialog for publishing mapsotherSteamFixed a bug with Gundanium Alloy appearing unlocalizedbug fixSteamAdded script command to initiate an event for each unit in a locationotherSteamNew recurring PvP Quests in the Daily sectionnew contentSteamCustom maps respect capitalization in load map windowotherSteamSuggested content dialog will only show on defeatgameplaySteamShooter no longer fires at air targetsbalance changeSteamFixed tooltips for NoColor and gold plated itemsbug fixSteamFix for Boomer capturing outpostsbug fixSteamNew textures for some neutral unitsnew contentSteamAdded script condition to compare current health of an AirMechotherSteamAdded script command for disabling energy regenotherSteamAdded support for specifying maximum flying height of Sample MapotherSteamAdded script event for AirMechs entering a locationotherSteamAdded support for placing PowerUps and prop CombosotherSteamAdded facing/rotation property to unit spawn script commandotherSteamIncreased rewards for Last StandgameplaySteamFixed crash occurring when loading a mapbug fixMilestoneSteamFixed bug with Gundanium Alloy appearing unlocalizedbug fixSteamAdded script event for AirMechs entering a locationotherSteamAdded Confirm dialog for New and Publish optionsotherSteamAdded support for specifying maximum flying height of Sample MapotherSteamAdded support for importing scripts from another locally saved mapotherSteamFixed a crash that could occur when loading a mapbug fixMilestoneSteamFixed bug causing suggested content dialog to be misalignedbug fixSteamBombs no longer require NavMesh to be spawned from scriptingotherSteamBombs no longer require NavMesh to be spawned from scriptingotherSteamFix for some artillery units appearing un-deployedbug fixSteamIncreased Upkeep from Survival structures in multiplayer matchesbalance changeSteamAdded script command for respawning an AirMechotherSteamAdded script command to initiate an event for each unit in a locationotherSteamFixed bug causing players to be stuck in Basecamp tutorialbug fixSteamFixed displayed ping values showing incorrectlybug fixSteamFixed Sonya and Dinger radar spinning animationsbug fixSteamAdded script condition to compare current health of an AirMechotherSteamAdded support for event and variable parameters in move location to unit scriptotherSteamAdded script command for respawning an AirMechotherSteamAdded support for importing scripts from another locally saved mapotherSteam
- 36 eventsPerformance Optimizations and Improvementsperformance
Numerous performance optimizations and improvements to the game engine.
SteamBuffed Some Ultimate Partsbalance changeBuffed some Ultimate parts to fit in with the new Mk4s.
SteamFixed Autotag on Newly Released Itemsbug fixFixed autotag on a few newly released items to allow linking in chat.
SteamIncreased XP for Destroying Bombs and Ultimate Unitsbalance changeIncreased XP award for destroying Bombs, Boosters, and Ultimate Units by 10%.
SteamReduced XP Requirement for Levels 10-20balance changeThe amount of XP required for persistent AirMech levels 10-20 has been reduced.
SteamCarry Speed Changes for All AirMechsbalance changeCarry speed changes for all AirMechs; no longer affected by AirMech level.
SteamIncreased XP Gain at Match Endbalance changeXP gained at the end of a match is increased by 50% before being applied.
SteamAI Optimizations for AutoDeployV2gameplayOptimizations made to the AI's AutoDeployV2 functionality.
SteamFixed AirMech Level Affecting Carry Speedbug fixFixed an issue where AirMech level affected carry speed calculations.
SteamFixed AI Tracking Units as Alliesbug fixFixed an issue with AI tracking units as allies after they were abducted.
SteamAI Infantry Building ImprovementsgameplayAI will now build infantry at the nearest base to their capture target.
SteamAI Logic ImprovementsgameplayImproved AI logic for various actions including escaping when health is low.
SteamFixed AI AirMechs Dropping Unitsbug fixFixed an issue with AI AirMechs continuously picking up and dropping a unit.
SteamFixed AI Not Attacking Certain Unitsbug fixFixed an issue with the AI not attacking certain units.
SteamCarry Speed Changes for All AirMechsbalance changeCarry speed is no longer affected by in-game AirMech level.
SteamAI Difficulty TweaksaiTweaks to lower difficulty settings for AI, making them more challenging.
SteamAI Chase Range IncreasedgameplayGreatly increased the AI's chase range for base defense when no enemy units are nearby.
SteamAI Difficulty TweaksaiTweaks to lower difficulty settings for AI, making them more challenging.
SteamFixed AI AirMech Unit Handlingbug fixFixed an issue with AI AirMechs continuously picking up and dropping a unit.
SteamIncreased XP Gain at Match Endbalance changeXP gained at the end of a match increased by 50% before applying to the AirMech used.
SteamFixed Matches Not Ending on Disconnectionbug fixFixed matches not ending when the enemy team leaves or is disconnected.
SteamFixed Match Ending on Disconnectionbug fixFixed matches not ending when the enemy team leaves or disconnects.
SteamAI Infantry Building ImprovementsgameplayAI will now build infantry at the nearest base to their capture target.
SteamFixed Common Name Linking in Chatbug fixFixed common name on a few Mk4 parts to allow proper linking in chat.
SteamAI Logic ImprovementsgameplayImproved AI logic for various actions including escaping when health is low and using blocker units.
SteamAI Chase Range IncreasedgameplayGreatly increased the AI's chase range for base defense when no enemy units are nearby.
SteamIncreased XP for Destroying Bombs and Boosterbalance changeIncreased XP award for destroying Bombs and Booster.
SteamReduced XP Requirements for Levels 10-20balance changeReduced the amount of XP required for persistent AirMech levels 10-20.
SteamPerformance Optimizations and ImprovementsperformanceGeneral performance optimizations and improvements to the game engine.
SteamFixed Common Name Linking in Chatbug fixFixed common name on a few Mk4 parts to allow proper linking in chat.
Steam - 76 eventsQueue Over Upkeep Limit Issuebug fix
Fixed another issue with being able to queue over the upkeep limit in multiplayer games.
SteamAI Stuck Attacking Overlapping AirMechbug fixFixed a case where the AI could get stuck trying to attack an enemy AirMech while overlapping it.
SteamRenaming of Heavy Armor PartsgameplayHeavy Helmet, Knee, and Chest Armor parts are being renamed to include 'Mk2'.
SteamAI Movement ImprovementsaiAirMech AI will now detect when it cannot walk to a location and will fly there instead.
SteamUnits Attached to Deploy Arm Upkeep Issuebug fixFixed an issue with units attached to the deploy arm not counting towards upkeep and allowing the limit to be exceeded.
SteamAI Pickup and Drop Loopbug fixFixed an issue where the AI would continually pickup and drop a unit.
SteamAI Drop Proximity Issuebug fixFixed a case where AI could get stuck trying to drop a unit too close to a base.
SteamAI Maneuvering Logic Around Obstaclesbug fixFixed AI logic for maneuvering around obstacles in air when stuck.
SteamIncreased Custom Path LimitgameplayThe limit on custom paths allowed per player has been increased from 3 to 6.
SteamUnits Attached to Deploy Arm Upkeep Issuebug fixFixed an issue with units attached to the deploy arm not counting towards upkeep and allowing the limit to be exceeded.
SteamAI Drop Unit Too Close to Basebug fixFixed a case where AI could get stuck trying to drop a unit too close to a base.
SteamAI Stuck Pickup Issuebug fixFixed a case where the AI could get stuck being unable to pickup a unit due to proximity to a fortress.
SteamOrder Passing to Boxer UnitsgameplayGiving orders to Boxer will now pass them down to units they carry.
SteamAI Pickup and Drop Loopbug fixFixed an issue where the AI would continually pickup and drop a unit.
SteamOrders to Boxer Pass Down to Carried UnitsgameplayGiving orders to Boxer will now pass them down to units it carries.
SteamNew Items Added to the Shopnew contentFive new items including Holdout Pistol and Survival Knife have been added to the Shop.
SteamAI Stuck Pickup Unit Near Fortressbug fixFixed a case where the AI could get stuck being unable to pickup a unit due to proximity to a fortress.
SteamFinished Button Not Responding in Tryoutbug fixSteamAI Transforming Stuck Issuebug fixFixed an issue with the AI getting stuck repeatedly transforming while trying to attack an outpost.
SteamFixed Targeting Issue with Roadblocks on Sandrimbug fixSteamHeavy Armor Parts Renamed to Include Mk2gameplayHeavy Helmet Armor, Heavy Knee Armor, and Heavy Chest Armor are being renamed to include 'Mk2'.
SteamOutposts and Forts Default Deploy DirectiongameplayOutposts and forts will now use the map center as the default deploy direction when there is no enemy fort.
SteamHero Targets Only AirMechs for Repairbalance changeHero will now only target AirMechs for repair.
SteamSuper Helix Added to the Shopnew contentSteamXP Awards for Building Units in PregamegameplayPlayers can now earn XP for building units during the pregame phase.
SteamDefault Deploy Direction for OutpostsgameplayOutposts and forts will now use the map center as the default deploy direction when there is no enemy fort.
SteamHero Repair Rate Increasedbalance changeHero repair rate for AirMechs increased from 33 to 100.
SteamFixed Targeting Issues on Sandrimbug fixFixed an issue with units not targeting the roadblocks on Sandrim.
SteamReturning Players Stuck in Basecamp Tutorialbug fixFixed an issue where returning players would be stuck in the Basecamp tutorial if they didn't have enough Kudos to build a structure.
SteamAI Overlapping Attack Issuebug fixFixed a case where the AI could get stuck trying to attack an enemy AirMech while overlapping it.
SteamComms Mk1 Structure Enables Market Chatui uxComms Mk1 structure now enables Market chat rather than the entire chat window.
SteamAI Maneuvering Logic Fixbug fixFixed AI logic for maneuvering around obstacles in air when stuck.
SteamPregame Phase AdjustmentsgameplayNeutral units can no longer be damaged before the timer expires, allowing players more setup time.
SteamBomber AI Mode Switching Issuebug fixFixed a case where Bomber AI wouldn't switch to air mode when out of reach of an enemy AirMech.
SteamGrinder Backtrack Issuebug fixFixed an issue that caused Grinder to backtrack when switching away from the capture order.
SteamFixed Google Login Buttonbug fixSteamReturning Players Basecamp Tutorial Issuebug fixFixed an issue where returning players would be stuck in the Basecamp tutorial if they didn't have enough Kudos to build a structure.
SteamUnits Move Closer to FortressesgameplayUnits on the Attack order will now move in closer to enemy fortresses to reduce blocking issues.
SteamNeutral Units Cannot Damage Before Timer ExpiresgameplayNeutral units can no longer be damaged before the pregame timer expires, allowing players more setup time.
SteamAI Stuck Transforming While Attacking Outpostbug fixFixed an issue with the AI getting stuck repeatedly transforming while trying to attack an outpost.
SteamPlayer-Built Units Cannot Latch to Neutral SocketsgameplaySteamNon-AA and Non-Artillery Turrets DeploymentgameplayNon-AA and non-artillery turrets will now deploy to the outer row.
SteamRecycling Returns Reduced to 75%balance changeRecycling now returns 75% of the unit's value to prevent XP farming in pregame.
SteamGrinder Backtrack Issuebug fixFixed an issue that caused Grinder to backtrack when switching away from the capture order.
SteamAI Can Fly to Locations It Cannot Walk ToaiAirMech AI will now detect cases where it cannot walk to a location and will fly there instead.
SteamXP Awards for Building Units in PregamegameplayXP can now be awarded for building units during the pregame phase.
SteamNew Items Added to ShopgameplaySuper Helix and five new items including Holdout Pistol and Survival Knife added to the Shop.
SteamMarket Chat Enablementui uxComms Mk1 structure now enables Market chat rather than the entire chat window.
SteamNon-AA and Non-Artillery Turrets Deploy to Outer RowgameplaySteamPlayer-Built Units and Neutral SocketsgameplayPlayer-built units can no longer be latched to neutral sockets.
SteamUnits Move Closer to Fortress on Attack OrdergameplayUnits on the Attack order will now move in closer to enemy fortresses to reduce blocking issues.
SteamDeploy Arm Clipping Issuebug fixFixed an issue with the deploy arm clipping through Factories and Outposts.
SteamHero Repair Rate for AirMechs Increasedbalance changeHero repair rate for AirMechs increased from 33 to 100.
SteamLunchbox Repair Sound for OutpostsaudioThe Lunchbox repair sound now plays for outposts as well.
SteamIncreased Custom Path LimitgameplayThe limit on custom paths allowed per player has been increased from 3 to 6.
SteamBomber AI Mode Switchingbug fixFixed a case where Bomber AI wouldn't switch to air mode when out of reach of an enemy AirMech.
SteamFixed Google Login Buttonbug fixSteamDeploy Arm Clipping Issuebug fixFixed an issue with the deploy arm clipping through Factories and Outposts.
SteamQueue Over Upkeep Limit in Multiplayerbug fixFixed another issue with being able to queue over the upkeep limit in multiplayer games.
Steam