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Seicross
Seicross stands as a defining action title on the NES. With polished gameplay mechanics and memorable level design, this classic delivers an experience that has stood the test of time.
- Developer
- Nichibutsu
- Released
- 1988
- Platform
- NES
- Genre
- Action
- Players
- 2P
- Rating
- 4.5 / 5 (649)
- Last updated
Seicross Controls — NES Keyboard Keys
Default keyboard bindings for Seicross on our in-browser NES 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) |
| Enter | Start | Start / Pause |
| Shift | Select | Select / Mode |
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Seicross Longplay & Gameplay Videos
Watch a full playthrough of Seicross on NES before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Seicross" NES longplay 1988
Seicross Cheat Codes
11 community-curated cheats for Seicross. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
-
Start With 9 Lives
PEYELEPELAGE -
Infinite Lives
XEIAXXSUTEEX0615:02 -
Infinite Energy
SXGPVZ -
Start with 1 life
PELAGA -
Start with 6 lives
TELAGA -
Slow motion
PEGEUG -
Invincibility against obstacles
ATOPUOSP -
Invincibility against enemies (but not their bullets)
AVVOEXSP -
8-way firing enemy doesn't shoot anymore
AVNZEIVT -
Infinite Health P1
0078:BD -
Infinite Lives P1
0615:99
External references
Frequently Asked Questions
When was Seicross released?
Seicross was released in 1988 for the NES.
Who developed Seicross?
Seicross was developed by Nichibutsu, available to play in your browser on RetroGameSpace.
How many players does Seicross support?
Seicross supports up to 2 players, ideal for couch co-op or competitive sessions on the NES.
What type of game is Seicross?
Seicross is a Action game for the NES, playable instantly in your browser — no downloads, no installs.
How can I play Seicross for free?
Open this page and click "Play Now" — Seicross runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Seicross in the browser?
No. Seicross streams from a public archive into a browser-side NES emulator. Nothing is installed on your computer.
Can I save my progress in Seicross?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original NES cartridge supported.
Does Seicross work on mobile devices?
Yes — the NES emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Seicross this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Seicross. 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.
