Alien Swarm: Reactive Drop is a top-down shooter game developed by Reactive Drop Team. However, it is worth noting that Reactive Drop is merely an expansion pack for Alien Swarm. The base game, meanwhile, was developed by no one other than Valve themselves. This, combined with the fact that both the game and the expansion are completely free on Steam, have earned the game its “overwhelmingly positive” rating.
The main focus of Alien Swarm is its co-op mode, where four players form a tactical squad to fight against alien bug-like creatures. But Reactive Drop adds other game modes as well. Several PvP modes were added, such as your usual deathmatch, team deathmatch and instagib. A singleplayer mode is available as well.
Although you have to act as a part of a squad in this game, there’s plenty of room for individuality as well. The players have four different character classes available to them, and can choose their gear and weapons. The game’s already extensive arsenal has grown even larger with Reactive Drop; there’s plenty to choose from.
Unfortunately, this is a Windows-only game. Don’t be disappointed, though; it is still possible to play Alien Swarm: Reactive Drop on Mac. How? Read the guide below and find out.