Screenshots
Alf
Alf is a platformer action game developed by SEGA for the Master System in 1988. Players control the mischievous alien character as he navigates through side-scrolling levels filled with obstacles and enemies. The game features straightforward controls: Alf moves left and right, jumps to overcome platforms and hazards, and collects items scattered throughout each stage to increase his score. The level design progresses in difficulty, with later stages introducing more complex platforming challenges and enemy patterns. Combat is minimal—Alf must primarily rely on jumping to avoid enemies rather than defeat them directly. The game spans multiple themed worlds, each with a distinct visual style and set of environmental hazards. Success requires precise timing and careful navigation through tightly-designed platforming sequences.
- Developer
- SEGA
- Platform
- Master System
- Genre
- Action
- Players
- 1P
- Rating
- 4.5 / 5 (2.4K)
- Last updated
Alf Controls — Master System Keyboard Keys
Default keyboard bindings for Alf 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.
Alf Longplay & Gameplay Videos
Watch a full playthrough of Alf 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
"Alf" Master System longplay
Alf Cheat Codes
11 community-curated cheats for Alf. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
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Infinite Lives
00C2-4A093A3-7BF-2A2 -
Infinite Money ($255)
00CF-70FF -
Item Slot Modifier 1
00CF-570?00CF-5701 -
Item Slot Modifier 2
00CF-580?00CF-5800 -
Item Slot Modifier 3
00CF-590?00CF-5900 -
Item Slot Modifier 4
00CF-5A0?00CF-5A00 -
Item Slot Modifier 5
00CF-5B0?00CF-5B00 -
Item Slot Modifier 6
00CF-5C0?00CF-5C00 -
Item Slot Modifier 7
00CF-5D0?00CF-5D00 -
Item Slot Modifier 8
00CF-5E0?00CF-5E00 -
Item Slot Modifier 9
00CF-5F0?00CF-5F00
External references
Frequently Asked Questions
Who developed Alf?
Alf was developed by SEGA, available to play in your browser on RetroGameSpace.
How many players does Alf support?
Alf is a single-player Action game for the Master System.
What type of game is Alf?
Alf is a Action game for the Master System, playable instantly in your browser — no downloads, no installs.
How can I play Alf for free?
Open this page and click "Play Now" — Alf runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Alf in the browser?
No. Alf streams from a public archive into a browser-side Master System emulator. Nothing is installed on your computer.
Can I save my progress in Alf?
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 Alf 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 Alf this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Alf. 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.
