Zypher Chrome Extension
Install, pin and open it — 3 steps, about a minute.
PastPlay offline game
Zypher is ready to play
Installation is complete. The original Game Boy adventure, a compact Flight Drill, and verified controls are packaged together for local play.
Offline-ready · No account · Focused popup play
Quick start
Start playing in three steps
Pin the extension
Open Chrome’s Extensions menu and pin Zypher so it stays easy to reach.
Open the game
Select the toolbar icon. Play the complete original Zypher ROM as the main experience.
Check the controls
Use the arrow keys to move, Z for A/fire, X for B, Enter for Start, and Shift for Select. Restart reloads the current session.
Two ways to play
Original first, quick mode second
Play the complete original Zypher ROM as the main experience.
Practice movement and firing in Flight Drill, a lightweight local HTML5 challenge.
Want more retro games?
The original web page for this game is currently unavailable, so this button opens the PastPlay game library.
Inside the extension
Gameplay preview
If the game does not respond
- Click once inside the game area before using the keyboard.
- Open Guide and confirm the controls for this game.
- Select Restart to begin a fresh game session.
Privacy details are available in the PastPlay Offline Game Extensions Privacy Policy.
Extension removed
Thanks for playing Zypher
The extension has been removed from Chrome. It requires no account and does not keep personal data after removal.