Define the game concept and core loop

Lock in a small game concept that is achievable and fully playable.

Keep the concept narrow. One player, one objective, one lose condition is enough.

First time here? Paste the Context Pack first so the AI understands your project - open it from the header above.

Prompt Capsule

Create a concise implementation plan for a small 2D browser game that can be built quickly but is fully playable. Choose one simple concept such as dodge enemies, collect items, survive timer, or reach target. Specify: player controls, game objective, core loop, score system, lose condition, win condition, required game objects, and UI states for start, playing, and game over. Keep the plan scoped to a single screen and simple visual shapes.

Paste into EmergentFull Build: complete implementation prompt with explicit requirements

Quick is short. Full Build is recommended for most steps. Strict forces real logic when the AI keeps faking output.

Actual change check

Expected after this step

A specific and scoped game design with concrete mechanics and state transitions.

Should NOT happen

An existing feature broke
A button only logs to console
Data disappears after refresh
Errors fail silently with no visible state

This is what should exist before you continue. If reality does not match, do not move on.

Your notes for this step

Track what changed, failed, or needs follow-up. Notes export with the flow.

Pass the Verify Gate to complete this step

Verify before continuing

Do not move on until every check is true. The complete button stays locked until then.

The game objective is stated in one sentencePlayer input controls are explicitly definedThere is at least one win or lose conditionThe game can fit on a single browser screenThe mechanic depends on actual movement and collisions

Do not continue if…

! Building a nice-looking screen with no actual game loop or controls
! Showing score and health labels that never update from real gameplay
! Rendering objects visually but not wiring up collision behavior
! Adding a restart button that only changes text instead of resetting state

If the AI messes this up

Use this when:

- it only made visual forms or placeholder UI
- buttons do nothing or only log to console
- data is not persisted - state disappears on refresh
- something that worked before is now broken

Use this when the AI fakes progress or breaks the feature. It forces a real fix.

Your concept is still too vague or too large. Reduce it to one playable loop on one screen. Define exact controls, objective, score logic, win condition, lose condition, and restart behavior. Do not add extra modes, levels, inventory, story, or multiplayer.