100 Offline Games

Play 100 classic Genesis games instantly — no upload, no server, 100% local. Powered by Genesis Plus GX.

100 Classic Games — Fully Offline, Right in Your Browser Open the extension, pick a game, and play. No accounts. No downloads. No internet connection required. Everything runs locally inside Chrome. HOW IT WORKS The extension bundles a compact, open-source emulation engine (Genesis Plus GX) together with 100 classic Genesis / Mega Drive ROMs directly inside the extension package. When you click a game tile, the engine loads the ROM entirely from your local storage — nothing is fetched from any server. The emulated console runs inside a sandboxed HTML page, so gameplay starts in seconds without any installation wizard or extra software. WHAT'S INSIDE • 100 hand-picked titles across 8 genres • Platformers — run-and-jump adventures spanning multiple sequels and studios • Beat Em Ups — side-scrolling brawlers for one or two players • Action — ninja warriors, robots, dolphins, and alien invasions • Fighting — legendary arcade one-on-one combat ports • Shooters — vertical and horizontal shoot-em-ups with intense bullet patterns • RPG — turn-based and action RPGs with rich storylines • Sports — basketball, football, and golf classics • Racing — motorbike road races and miniature car championships CONTROLS The keyboard is mapped automatically: Arrow keys move your character, Z / X / A / S handle action buttons, Enter = Start, Shift = Select. Gamepad controllers connected via USB or Bluetooth are also supported through the standard browser Gamepad API — plug in and play. BROWSING YOUR LIBRARY Use the search bar to filter games by name, or click the genre buttons (All · Platformer · Beat Em Up · Fighting · Action · Shooter · RPG · Sports · Racing) to narrow down the list. Click any game card to launch it. Press the Back button inside the player to return to your library. PRIVACY This extension makes zero network requests. All game data, engine code, and artwork are bundled locally. No data is collected, stored, or transmitted. SYSTEM REQUIREMENTS Chrome 88 or later (Manifest V3). Works on Windows, macOS, and Linux. No additional plugins or software needed.