Phosphor is a first-person shooter created with Macromedia Director (links will open in new window). The Shockwave Player allows the game to run within a web browser on Windows and Mac OS computers. Both single player (with AI-controlled bots) and multiplayer (using peer-to-peer Internet or LAN connections) game modes are supported.

W, A, S, D to move, Space to jump, C to crouch, mouse to look/turn, mouse button to fire, right mouse button to zoom, F next weapon, G previous weapon, 2-5 select weapons, E - activate, Enter - talk, Back - score, ~ (tilde) - access "command console", Esc or P - pause.