Alien Storm
Alien Storm stands as a defining action title on the Sega Genesis. With polished gameplay mechanics and memorable level design, this classic delivers an experience that has stood the test of time.
- Developer
- SEGA
- Released
- 1991
- Platform
- Mega Drive
- Genre
- Action
- Players
- 2P
- Rating
- 4.3 / 5 (2K)
- Last updated
Alien Storm Controls — Mega Drive Keyboard Keys
Default keyboard bindings for Alien Storm on our in-browser Mega Drive 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 | A | Primary action (jump / confirm) |
| Z | B | Secondary action (attack / cancel) |
| S | C | Tertiary action |
| A | X | Quaternary action |
| Q | Y | Fifth button |
| W | Z | Sixth button |
| Enter | Start | Start / Pause |
These bindings cover the 6-button Mega Drive controller. Most older titles only use buttons A/B/C; the extra X/Y/Z buttons matter for Street Fighter II and other 6-button fighters.
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Alien Storm Longplay & Gameplay Videos
Watch a full playthrough of Alien Storm on Mega Drive before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Alien Storm" Mega Drive longplay 1991
Alien Storm Cheat Codes
30 community-curated cheats for Alien Storm. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
-
Full Energy & Life Bar
00352A:31FC+00352C:FFFF -
Unlimited Continues
003A2E:6002 -
Infinite Lives P1
FFCE0B:0060 -
Unlimited Energy P1
FFCE0C:0080 -
Infinite Lives P2
FFCE8B:0060 -
Unlimited Energy P2
FFCE8C:0080 -
MASTER CODE-MUST BE ENTERED
EABT-AA4W -
Special attack uses no energy
AB8A-AACW -
Special attack uses 1/2 as much energy
AB8A-ANCW -
Normal attacks use no energy
R1DT-A60R -
Normal attacks gain energy instead of losing it
P1DT-BD0R -
Start with maximum energy
AA4A-BB96
Show 18 more cheats Show fewer
-
Infinite credits
AJ7A-AA3RFFF312:0300 -
Each energy unit is worth 2 times as much
AB9T-CTE0 -
Each energy unit is worth 4 times as much
AB9T-DAE0 -
Each energy unit is worth 8 times as much
AB9T-CAN0 -
Most alien hits do no damage
ALXT-AA4Y -
Aliens in shooting gallery do no damage
AJEA-CA7R -
Start on Mission 2 (Expel the Aliens)
9WET-BCS4+CWET-B998+ACET-AGH6 -
Start on Mission 3 (Alien's Nest)
9WET-BCS4+CWET-B998+ACET-ANH6 -
Start on Mission 5 (Save the Laboratory)
9WET-BCS4+CWET-B998+ACET-A2H6 -
Start on Mission 6 (Night Crawler)
9WET-BCS4+CWET-B998+ACET-A8H6 -
Start on Mission 7 (Destroy the UFO)
9WET-BCS4+CWET-B998+ACET-BEH6 -
Start on Mission 8 (Final Battle)
9WET-BCS4+CWET-B998+ACET-BLH6 -
Infinite Special
FFCE0C:7FFFAK8A-AA5A -
Infinite Energy
FFCE0A:0060AMBT-AA96AK8A-AA5A+AMDT-AA8R+AJFA-CA74 -
Invincibility On Brawl Stages.
AXBT-AN5T -
Start On Mission 2 - Expel The Aliens
9WET-BCS4+CWET-B998+ACET-AGH6 -
Start On Mission 3 - Alien's Nest
9WET-BCS4+CWET-B998+ACET-ANH6 -
Start On Mission 5 - Save The Laboratory
9WET-BCS4+CWET-B998+ACET-A2H6
External references
Frequently Asked Questions
When was Alien Storm released?
Alien Storm was released in 1991 for the Mega Drive.
Who developed Alien Storm?
Alien Storm was developed by SEGA, available to play in your browser on RetroGameSpace.
How many players does Alien Storm support?
Alien Storm supports up to 2 players, ideal for couch co-op or competitive sessions on the Mega Drive.
What type of game is Alien Storm?
Alien Storm is a Action game for the Mega Drive, playable instantly in your browser — no downloads, no installs.
How can I play Alien Storm for free?
Open this page and click "Play Now" — Alien Storm runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Alien Storm in the browser?
No. Alien Storm streams from a public archive into a browser-side Mega Drive emulator. Nothing is installed on your computer.
Can I save my progress in Alien Storm?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Mega Drive cartridge supported.
Does Alien Storm work on mobile devices?
Yes — the Mega Drive emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Alien Storm this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Alien Storm. 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.
