01 / DescribeStart with one sentence.
New game idea
A tiny astronaut collects star fragments while dodging space debris in a crumbling orbit.
Tone
Whimsical, nostalgic, and a little lonely.
You describe the idea. B.O.B. turns it into a real build.
The Grotto Studio
Build, play, and refine with B.O.B. — then publish the version that feels right.
New game idea
A tiny astronaut collects star fragments while dodging space debris in a crumbling orbit.
Whimsical, nostalgic, and a little lonely.
You describe the idea. B.O.B. turns it into a real build.
Run it in the browser. Feel the loop and decide what should change next.
Version ledger
Thread: Main journey
Thread: Arcade challenge
Try another direction, then return to any saved version with confidence.
Return to the game, source, and run history you already built.
Explore another approach without losing the game you started from.
Resume from a saved checkpoint when a run stops or an idea changes.
How Studio works
Studio keeps the game, the work, and the decision points visible all the way through.
Describe the genre, core loop, controls, and visual direction — or begin with a proven template.
Review the quote and approve the most a run can spend before B.O.B. starts building.
Follow the plan and meaningful progress while Studio builds, then play the checked result when it is ready.
Try the game in your browser, edit the code, or open another thread to explore a different direction.
Ship the exact reviewed version to The Grotto while earlier versions remain ready to revisit.
Choose your starting point
Build in 2D, 2.5D, or 3D, start from a template, and choose the model and thinking effort that fit this run.
Preview the workspaceDungeon crawler
Top-down 2.5D crawler where players collect crystals, dodge hazards, and bank a run score.
Endless runner
One-button 2D runner with rising speed, combo multipliers, and a global high-score board.
Tower defense
Wave-based 2.5D tower defense with buildable towers, currency economy, and boss waves.
Free model inference during preview; assets and sandbox usage still cost extra
Efficient multimodal builds, coding, and focused iterations
Fast multimodal reasoning, responsive coding, and game iteration
Fast, efficient tool-driven builds with flexible reasoning
Deep coding work, long context, and deliberate multi-step builds
Systems-heavy mechanics, coding, and STEM-flavored game logic
Balanced complex builds, polished code, and longer agent loops
Long-horizon agentic builds, game development, and ambitious 3D work
Demanding coding, review, visual analysis, and long agentic work
Flagship complex reasoning, coding, and multi-step agentic builds
Complex reasoning, coding, and long-running game builds
Pro reasoning for demanding builds; typically uses more tokens
Built for The Grotto
Tell B.O.B. what your game needs. Studio can shape the game around Grotto identity, saves, events, access, and publishing.
Ask B.O.B. to wire in identity, cloud saves, and autosave for returning players.
Track the moments that matter and turn them into Grotto leaderboards.
Add server-checked token or NFT gates when your game calls for them.
Review the exact version you are about to make live on The Grotto.
Know before every run
Studio shows the run quote and asks you to authorize a cap before work begins. Actual usage draws from your USD-valued Studio credits up to that limit; any unused hold is released.
Your next build