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What is the game file?
A game file is the digital copy of a cartridge or disc. It can be one you made yourself from your own, or a new game its author gives away for free.
This page only opens Sega Master System games, in .sms .zip .7z files. A .zip or .7z works too, as long as it holds a Sega Master System game: games from other consoles don't open here.
Your files and saves stay with you only. Learn more
Sega Master System controls
| Button | Keyboard | Controller |
|---|---|---|
| D-pad | ↑ ↓ ← → | D-pad |
| Button 1 | Z | A · ✕ |
| Button 2 | X | B · ○ |
| Pause | Enter | Menu · Options |
| Save state | F2 | — |
| Load state | F4 | — |
Buttons follow the layout of the original controller. Xbox, PlayStation, Switch Pro, 8BitDo and similar controllers work with no setup. Up to 4 controllers, one per player, in the order they're connected; the keyboard is always player 1. To change a button, open the emulator menu and go to Controls.
How to save the game
- Game save: Games with a battery save from the game's own menu. For the others, use a save state.
- Save state: saves the exact spot, at any moment, in 4 slots next to the game. On the keyboard, F2 saves and F4 loads.
- Where it's kept: in this browser, on this device, even after you turn it off. To continue, open the same game again. A private window keeps nothing, and clearing the browser's data erases your saves.
Controller settings
About Sega Master System
Sega’s 8-bit console from 1985, released in Japan as the Mark III. In Brazil, Tectoy made and sold it for decades.
Sega's 8-bit console.
- Maker
- Sega
- Released
- 1985
- Accepted files
- .sms .zip .7z
- Players
- Up to 2 players
- Online play
- Yes, through the room link
- BIOS
- Not needed