Master Arena

Master Arena is a free-to-play multiplayer first-person arena shooter in a sci-fi setting. The game offers several classic modes, including duel, team battle and capture the flag. There are 12 maps (several more are in development). Matches can involve from 2 to 10 players. In battles, you can use perks (from healing allies to invisibility). Features include offline mode (with bots), local network play, and a map editor for the Steam Workshop.