ev.io is a browser-based First-Person Shooter game (FPS) inspired by Bungee-style shooters such as Halo. Players must move through a futuristic environment to collect weaponry and unlock special abilities. These abilities largely centre on movement, including higher jumps, faster sprints, and the ability to teleport to different locations. There are multiple game modes, including a team mode and deathmatch mode, with additional game modes and features under development.