What changed in RimWorld in 2017

Gun research is now broken into several stages, requiring more research for advanced guns.

Introduced positive mental inspirations providing temporary bonuses to colonists.

Crop blights now appear and spread over time instead of instantly destroying crops.

Research for guns and melee weapons is now broken into several stages.

Includes work frenzy, go frenzy, shoot frenzy, and inspired trade.

Save files now contain the actual contents of the planet map for improved loading and compatibility.

Spaceship is now bigger with an additional component and requires advanced components for construction.

World features like lakes and mountain ranges are now detected and named.

Lakes, mountain ranges, and bays are now detected and named.

Introduced special items as quest rewards including psychic emanator and orbital bombardment targeter.

Includes various types of mental breaks like insulting spree, tantrum, and murderous rage.

Includes meteorite impact, aurora, tornado, peace talks quest, world refugee quest, and prisoner rescue quest.

Spaceship is now larger with new components and requires advanced components for construction.

Crop blights now spread over time instead of instantly destroying crops.

Introduced incidents such as meteorite impact, aurora, tornado, and various quests.

Includes sleeping mechanoids, animal ambush, and enemy ambush.

Alert letters and sounds have been redesigned for better specificity.

One type of mortar can now fire any type of shell with different effects.

Caves can now form with special cave plants and dormant insect hives.

Includes psychic emanator, vanometric power cell, infinite chemreactor, and more.

Introduced components like sleeping mechanoids and ambush scenarios.

Pawns can be abandoned in caravans.

Caves can now form in mountainous maps containing special plants and dormant insect hives.

Added bedroll, dresser, endtable, and various new table sizes.

The save file now contains the actual contents of the planet map for improved loading speed.

Major rework of melee combat with a new combat log feature.

Artillery now has one type of mortar that can fire various shell types with different effects.

Numerous tunings, bug fixes, and redesigns implemented.

Reworked melee combat with a new combat log for detailed reporting of interactions.

Added tropical swamp, temperate swamp, and cold bog biomes with new plants.

Includes new weapons and tribal characters.

Added new tribal weapons and characters including Ikwa melee weapon and tribal berserker.

Added various new mental breaks including insulting spree and murderous rage.

Includes tropical swamp, temperate swamp, and cold bog.

Includes bedroll, dresser, endtable, and various new table sizes.

Sales for the Backstory-in-Game and Pirate King packages will close on November 7, 2017, while the Name-in-game package remains available.

Optimized targeting AI and other elements to improve performance in late game.

Optimized targeting AI and other elements to improve CPU performance in late game.

Allows placing several waypoints and measures travel time along the route.

Introduced new graphics for some floor types and objects.

Fixed various memory leaks to improve game performance.

Trade price spread is now much wider, with social skill having a greater effect.

AI has more intelligent ranged shot target selection, making it harder to exploit.

Characters can now tend their own wounds with a penalty to effectiveness.

Plants now have different graphics when they are harvestable.

Added smokepop belt, bowler hat, and chain shotgun weapon.

Allows placing several waypoints and measures travel time along the route.

Mining skill now has a steeper speed penalty for low skill and yield is slightly dependent on mining skill.

Introduced caravan packing spot and payment demand incident.

Plants now have different graphics when they are harvestable.

Reworked surgery success chances and fixed a bug where it was 100% outdoors.

Mining skill now has a steeper speed penalty for low skill and yield is slightly dependent on skill.

Bills can now be temporarily paused when satisfied, reducing unnecessary returns to work benches.

Added new world quest incidents including Item stash, Bandit camp, and Caravan request.

Fixed various memory leaks to improve game performance.

Seasons are now arbitrary 'quadrums' covering 1/4 of the year.

World now generates with roads and rivers, featuring five road types and four river sizes.

World now generates with roads and rivers, including five road types and four river sizes.

Plant generation algorithm for map start reworked for more interesting patterns.

AI now has more intelligent ranged shot target selection, reducing dumb behavior.

Reworked surgery success chances and fixed a bug where it was 100% outdoors.

Added new world quest incidents including Item stash, Bandit camp, and Caravan request.

Mortars are now cheaper and faster to build, with greater accuracy and cheaper shells.

Trade price spread is now much wider, but social skill has a greater effect on it.

Added smokepop belt, bowler hat, and the ability for characters to tend their own wounds.

Enemy AI will be harder to exploit and will act more sensibly.

A new class of incidents will initiate quest opportunities on the world map.

A new class of incidents will initiate quest opportunities on the world map using a combinatorial 'site' system.

Players can now tend to their own wounds.

Enemy AI will be improved to act more sensibly and be harder to exploit.

Extensive rebalancing to enhance skill importance, economy coherence, and gameplay mechanics.

Enemy base generation has been redesigned for improved gameplay.

Players can now tend to their own wounds, adding a new layer of gameplay.

New roads and rivers will be added across the world, enhancing the travel experience.

Multiple categories of roads and rivers will be added across the world.

Extensive rebalancing to make skills, economy, and various gameplay elements more coherent and balanced.

Enemy base generation has been redesigned for improved gameplay.

A new column displaying the mass of each gear stack has been added to enhance user experience.

Solutions to exploit strategies include reworking AI to prevent players from gaining unfair advantages.

Several gameplay systems have been rebalanced based on community feedback and new balance analysis tools.

A significant number of bugs have been addressed as part of the Alpha 17 refinement build.

Several gameplay systems have been rebalanced based on community feedback and new balance analysis tools.

Solutions have been developed for various exploit strategies that players used to gain advantages.

A significant number of bugs have been addressed in the upcoming Alpha 17 update.

A review of memory handling is underway to reduce memory waste and prevent out-of-memory crashes.

A new feature has been added to show the mass of each stack in the character's gear tab.

Several AI mechanics have been reworked to fix issues related to exploit strategies.

A review of memory handling is underway to reduce memory waste and improve performance.