— CAN YOU GUESS IT? —

GUESS ALIEN SWARM FROM SCREENSHOTS

Valve released this top-down co-op shooter for free in 2010, complete with its source code. Four players pick complementary classes such as medic, tech, and special weapons, then burn through insectoid swarms in tight corridors where friendly fire and hacking minigames demand genuine coordination.

📅 Year:: 2010
🎮 Platforms:: windows
🏷️ Genres:: 2D scrolling, Action, Direct control, Sci-fi, Shooter, Survival, Survival horror
💀 Difficulty:: Easy
🕹️ On Game Guessr:: 2 × screenshots

3.3/5 · 25 ratings

🖼️ PLAY CLASSIC 📅 DAILY

The mystery game is randomly picked — will you land on Alien Swarm? Browse the full list of playable games.

▸ IN-GAME SCENES

▸ ALIEN SWARM ON GAME GUESSR

In the quiz rotation, Alien Swarm is represented by 2 in-game screenshots. Difficulty-wise it sits in the Easy tier, based on how often players guess it correctly.

Want to test yourself right now? Launch a round above, the game shows you a screenshot pulled at random from the catalog (Alien Swarm among them) and challenges you to name it before the timer runs out. No account or download needed.