haruka_apps
Welcome to haruka_apps Laboratory
I make small games, creative tools, AI-assisted experiments, and CC0 recipes.
This lab is built from 1,400+ prototypes.
Most failed. Some worked. A few became little gems.
To me, AI is not a magic lamp.
It is a skilled carpenter, and the human still brings the taste, rules, and imagination.
Here you will find playable games, creator tools, and CC0 recipes for anyone who wants to make something.
My wish is to help the next generation of creators turn their words into worlds.
Welcome to the lab.
Spot the anomaly on Tokyo's rain-soaked Inner Circular Route at 2 a.m. Take the exit — or keep driving.
Racing
Play in browser
Featured
Spot the anomaly on Tokyo's rain-soaked Inner Circular Route at 2 a.m. Take the exit — or keep driving.
Racing
Play in browser
Four brass keys. One sleepless Matron. A sanatorium that remembers you. A first-person psychological horror.
Adventure
Play in browser
Hold the crown against the Ashen tide — a pixel-art castle siege battler for phones.
Strategy
Play in browser
A torchlit 3D fantasy dungeon crawler featuring real-time combat, companion AI, and full voice narration.
Adventure
Play in browser
Hold the last wall against the dark. A 3D dark-fantasy castle defense.
Strategy
Play in browser
Outrun the law or bust illegal street racers in this high-octane 3D highway pursuit racer!
Racing
Play in browser
Fast-paced 3D Battle Royale & Survival Shooter in your browser
Shooter
Play in browser
Step inside a neon-drenched retro arcade, swap coins for medals, and master 3 distinct eras of authentic pinball!
Simulation
Play in browser
Travel across 1955, 1985, and 2015 in a 3D time-travel pinball adventure at 88 MPH!
Sports
Play in browser
Dash, grind, and loop through a vibrant tropical coast in this high-speed 3D mascot platformer!
Platformer
Play in browser
Eight speedboats, one living ocean. Surf the swells to charge your boost.
Racing
Play in browser
Selected Works
3D将棋 × 駒姫育成 × フルボイスストーリー / 3D Shogi Anime Battle & Card Collection RPG
Strategy
Play in browser
12人の美少女アイドルと煌めく3D卓で競う、本格フルボイス麻雀ゲーム！
Card Game
Play in browser
Fast-paced 3D arcade volleyball action — dig, set, spike, and claim victory!
Sports
Play in browser
Rise from 8th seed to the championship in high-speed 3D table tennis with singles and doubles action.
Sports
Play in browser
Horror chess in a dark interrogation room. Watch as eldritch tentacles devour captured pieces. Your move.
Strategy
Play in browser
A sleek 3D vector-wireframe chess game powered by a clean, lightweight custom AI (~1050 Elo). Built for browser play!
Puzzle
Play in browser
A first-person ASCII odyssey. Navigate the digital consciousness of a rogue machine.
Shooter
Play in browser
Hack the mainframe in a neon cyberpunk poker deckbuilder. Build your combo deck and breach the system!
Card Game
Play in browser
Defend the Mana Crystal from ten waves of hungry slimes! one apprentice, three towers, and a sky full of falling stars.
Survival
Play in browser
Creative Tools & CC0 Recipes
The ultimate AI Video-to-Asset workflow tool. Slice, de-noise, and export sprites in seconds.
Run in browser
Generate unified classic 16-bit style maps & sprites with these text recipes.
Generate infinite 16-bit retro battle scenes, monsters, skills, and equipment! Prompts included.
Run in browser
Generate ABC notation with an LLM, convert it to Pyxel MML, and play it instantly.
Run in browser
Run in browser
Pyxel Games
A first-person drive around the real Tokyo Inner Circular Route (Shuto Expressway C1), built from OpenStreetMap data.
Racing
Play in browser
Drive the real Tokyo — 20,000 buildings from OpenStreetMap, rendered in Pyxel.
Simulation
Play in browser
A retro-futuristic 3D time-travel pinball adventure powered by Pyxel.
Sports
Play in browser
Play wireframe chess against an AI or watch a legendary game from 1858.
Strategy
Play in browser
Fly, dodge, shoot, and barrel-roll through a collapsing neon battlefield.
Shooter
Play in browser
Run toward the camera while a colossal wireframe boulder destroys everything behind you.
Action
Play in browser
Dash down the twisting rings in this hyper-casual 3D drop-and-smash arcade game!
Action
Play in browser
A strategic 9x9 evolution of Tic-Tac-Toe. Win three sub-boards to conquer the ultimate grid!
Puzzle
Play in browser
A cozy but challenging puzzle game about switching between two characters to cross the void.
Puzzle
Play in browser
A retro side-scrolling space shooter with power-ups, bosses, and 2 stages — built with Pyxel!
Shooter
Play in browser
Harness the power of lightning to defend your isometric world from a terrifying alien ant swarm!
Action
Play in browser
Survive the endless night. Master 7 magic spells and defeat giant Bosses in this 16-bit retro action roguelike!
Action
Play in browser
Thrilling motocross racing! Compete online with up to 4 players, manage your turbo heat, and dominate the mud ramps!
Racing
Play in browser
Burn through the void in this high-fidelity procedural particle shooter.
Shooter
Play in browser
Experimental Games
Return to a forgotten town. Survive its last festival in a PSX-inspired folk-horror roguelite.
Action
Play in browser
A neon sci-fi 3D pinball table with hologram gimmicks, loops, multiball and a full soundtrack.
Action
Play in browser
A neon sci-fi 3D pinball table with ramps, multiball, jackpots and a synthwave soundtrack.
Sports
Play in browser
They are only lines. Do not let them erase you. A stylish wireframe survival FPS in an ink-drawn forest.
Shooter
Play in browser
Four classic games from around the world — Carrom, Curling, Pétanque and Mancala — in 3D vs AI.
Sports
Play in browser
Light up VOLT, lock your balls, and ignite a high-voltage 3-ball multiball in this 1978-inspired 3D arcade table!
Action
Play in browser
Climb a rising neon tower where Bit never stops running and cherries control your fate!
Platformer
Play in browser
Carve through rolling swells and thread dangerous tropical waterways in this high-speed 3D water runner!
Action
Play in browser
Explore a rainy 1985 town square in 3D converted into a retro Pyxel screen
Simulation
Play in browser
A 3D circuit racer projected onto a 512×288 Pyxel retro framebuffer.
Racing
Play in browser
Fly, transform, and collect eight glowing fragments across Draco
Adventure
Play in browser
A retro PS1-style survival horror homage. Find the silver key, face the beast, and escape the darkness.
Survival
Play in browser
Race through the neon cosmos at blazing speed on roads built from your own deck.
Racing
Play in browser
Every spell sends you flying. Use magic recoil to climb the room, reach the emergency exit, and survive the chaos.
Platformer
Play in browser
A runner game where you cross gaps by folding the paper world itself.
Action
Play in browser
Descend into Hell and fight endless waves of demons in this retro-style voxel FPS.
Shooter
Play in browser
A neon-drenched, cyberpunk reimagining of Minesweeper-style. Jack in, hack the grid, and avoid the viruses.
Puzzle
Play in browser
Generative Art
Break the steps—but each one rebuilds before the walker can fall.
Interactive Fiction
Play in browser