Alien Swarm

Security fixes launched on August 18, 2020, addressing vulnerabilities in client/server file transfers. Additionally, the same update resolved the 'Out of thread ids' error, which affected players using systems with 32 or more logical processors. The localization files were also updated in this patch, improving language support for players.

• Security Fixes: Addressed vulnerabilities in client/server file transfers on August 18, 2020.
• Error Resolution: Fixed the 'Out of thread ids' error impacting high logical processor count systems in the same update.
• Localization Update: Improved localization files were released on August 18, 2020.

On August 23, 2010, Alien Swarm introduced the Onslaught Mode with AI Director, a significant update that dynamically generates alien swarms based on squad stress levels. This patch also added a new Brutal difficulty level, catering to players looking for an increased challenge. Alongside these features, three new IAF Promotion Ranks were introduced to reward dedicated players.

• Onslaught Mode: This mode features an AI Director that creates alien swarms based on the squad's stress level, enhancing replayability and challenge.
• Brutal Difficulty Level: A new 'Brutal' difficulty was added, providing a more intense experience for players who completed the 'Insane' level.
• IAF Promotion Ranks: The update introduced three new ranks: Platinum Star, Osmium Star, and Iridium Medallion, encouraging player progression.
• Hardcore Friendly Fire Toggle: This option allows for full damage from friendly fire, increasing the stakes during gameplay with faster fire from flamethrowers and turrets harming teammates.