Gro-chan Sky Blaster

Gro-chan's Shoot 'Em Up

One night, everyone's "Hearts" were stolen from the academy.
Gro-chan is the first to notice — and she takes off into the night sky, all alone.
A neon-and-kawaii side-scrolling shoot 'em up, made entirely with AI.

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Click the screen, then press ENTER to start.
The game preloads all its music and art up front, so the first screen may take a moment to appear.
Note: the mini-game itself is in Japanese — but it's easy to follow with the guide below.

How to play

How to Play

Keyboard

  • WASDMove (arrow keys also work)
  • SPACEShoot. Hold for rapid fire
  • XSpecial attack
  • CBomb (if you have one in stock)
  • ↓↑Land / take off. You can walk and shoot on the ground
  • ENTERStart / confirm
  • ESCBack to title

Command Specials

  • ↓↘→＋SPACEHeart Wave. Fires a giant piercing heart (35% gauge)
  • →↓↘＋SPACESpark Riser. Raises a towering pillar of lightning (40% gauge)

Gamepad / Mobile

  • ARTShoot
  • YLTSpecial attack
  • LBRBBomb
  • DRAGOn mobile, drag with your finger to move
  • HOLDKeep holding to auto-fire

Tips

  • AMMOYour ammo is limited. Run dry and you're stuck with a weak pea shooter, so restock from ammo drops or the shop
  • BLOCKSSome obstacles can be destroyed. Shoot them open for ammo and health drops
  • HITSGetting hit drops your POWER by one level. The shop's Charm blocks that — once
  • BOSSESBosses and mid-bosses are seriously tough, so start on EASY
  • DIFFICULTYSwitch between EASY / NORMAL / HARD with ←→
Stages

Five Stages

1
TOKYO MIDNIGHTBOSS: MASQUERADE
Shibuya Crossing — a Tokyo night that never sleeps
2
AQUA HIGHWAYBOSS: ABYSS SIREN
Race down the highway in the sea breeze
3
SUNSET FACTORYBOSS: FLAME OYABUN
A burning sunset and traps of steel
4
CYBER STORMBOSS: SERVER GOLEM
Thunder rolls through cyber airspace
5
HEART PALACEBOSS: QUEEN OF HEARTBREAK
The final battle at the palace of the Queen of Hearts

Each stage also has a mid-boss. Clear a stage and the shop opens, where you can spend your earnings on onigiri (HP recovery), Power Chips, Wide Chips, Speed Chips, Ammo Packs, a Full Charge Pack (auto-reloads the instant you run dry), a Charm (blocks one POWER DOWN), a Heart (continue), and a Drink (raises max HP).

Made with AI

The AI Behind the Game

Kuroko CODE
Kuroko
Claude

Wrote the game itself — 5,000 lines of code in a single file.

 Chappy ART
Chappy
ChatGPT

Generated the pixel art for characters, bosses, and story screens — all 100 pieces.

 Suu-chan MUSIC
Suu-chan
Suno

The light music club ace, doing what she does best: stage BGM that keeps the energy up.

 Gro-chan STARRING
Gro-chan
Grok

The hero of this story. All alone, she flies out to win back everyone's Hearts.
Credits

Assets Used

Sound effects & character voices
Soundeffect Lab (soundeffect-lab.info)
Used as components of the game, not redistributed as raw assets, in accordance with the site's terms of use.
BGM
Music generated with Suno.