Blitz — Free Browser FPS
Blitz is a free first-person shooter you play right in your browser. Survive waves of necromancers across four arenas - Grid Arena, The Conduit, The Undercroft and The Gantry - or host an online deathmatch and fight friends and bots. No download, no sign-up.
It needs JavaScript and WebGL to run. Turn JavaScript on and reload the page to play.