Zypher — Retro Game

Play the open-source Game Boy homebrew shooter Zypher offline in Chrome, with original gameplay and a flight drill.

Zypher is an open-source 8-bit side-scrolling shooter created by PixelPhobicGames. Play the complete original game directly in a focused Chrome extension popup. The game and its runtime are packaged with the extension, so gameplay works offline after installation and requires no account or separate download. Features: - Complete original game as the main experience - Flight Drill, a lightweight local HTML5 training mode - Offline play after installation - Keyboard and compatible gamepad controls - No ads, analytics, tracking, or account Keyboard controls: - Arrow keys: move - Z: fire / A button - X: B button - Enter: Start - Shift: Select