Assault City
Assault City remains one of the finest action experiences on the Sega Master System. Its innovative design and addictive gameplay have earned it a permanent place in gaming history.
- Developer
- Sanritsu Denki
- Platform
- Master System
- Genre
- Action
- Players
- 1P
- Rating
- 4.8 / 5 (1.4K)
- Last updated
Assault City Controls — Master System Keyboard Keys
Default keyboard bindings for Assault City on our in-browser Master System emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | D-Pad Up | Move up |
| ↓ | D-Pad Down | Move down |
| ← | D-Pad Left | Move left |
| → | D-Pad Right | Move right |
| X | 1 | Primary action (jump / confirm) |
| Z | 2 | Secondary action (attack / cancel) |
| Enter | Pause | Start / Pause |
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Assault City Longplay & Gameplay Videos
Watch a full playthrough of Assault City on Master System before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Assault City" Master System longplay
Assault City Cheat Codes
4 community-curated cheats for Assault City. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
-
Infinite Energy [Switch Off A The End of The Level]
00C0-D90A -
Infinite Energy
3AB-26D-2A2+3A2-8DC-2A2+3A0-137-2A200C0-D90A -
Good Android Score
00C2-FF15 -
Enemies Can't Hit You
00C0-D910
External references
Frequently Asked Questions
Who developed Assault City?
Assault City was developed by Sanritsu Denki, available to play in your browser on RetroGameSpace.
How many players does Assault City support?
Assault City is a single-player Action game for the Master System.
What type of game is Assault City?
Assault City is a Action game for the Master System, playable instantly in your browser — no downloads, no installs.
How can I play Assault City for free?
Open this page and click "Play Now" — Assault City runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Assault City in the browser?
No. Assault City streams from a public archive into a browser-side Master System emulator. Nothing is installed on your computer.
Can I save my progress in Assault City?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Master System cartridge supported.
Does Assault City work on mobile devices?
Yes — the Master System emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Assault City this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Assault City. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
