Plan and test game mechanics

A mechanic needs an observable rule: an action, a change in state and feedback to the player. Before adding more systems, test whether the first action, win condition and restart work together. The existing guides below provide the starting workflow and debugging checks.

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Prepare a game for publishing

Publishing starts with a game that can be tested, understood and maintained. Check the available creator controls, audience settings and safety requirements before a release. Use the publishing guide for the sequence, and the troubleshooting guide for an actual blocked step.

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BC-0167 · TROUBLESHOOTING

Editorial review 2026-09-26

Roblox Build Game Freezes

A freeze diagnosis starts with what stopped changing after the game was already playable. Compare player input, scene motion, the game UI and the surrounding app separately. A motionless player, a round that has ended and a whole app that no longer responds are not the same failure.

Symptom

A previously playable game stops responding or changing during the session.

Immediate action

Identify the last successful action and which game/app surfaces still respond.

Diagnostic branches

Only player input stops while scene activity continues.: Use input or movement diagnosis with the action that preceded the stop.
The round reached an intentional end panel but the next action fails.: Investigate the missing end-to-next-round transition.
All game activity stops but app navigation still responds.: Record the game-level freeze boundary without assigning an internal cause.
The whole app stops responding or closes.: Preserve the broader app state and use the app-freeze or crash path without repeated reproduction.

Least-destructive change

Observe response boundaries and stop duplicate input before making a narrowly scoped repair.

Retest

The test begins from the same round phase as the original freeze.
A previously working action remains functional after the repair.
A normal end-state pause is distinguished from a missing next-step response.

Escalation

Escalate the last successful event, first missing response and remaining responsive surfaces. Do not deliberately force more crashes, promise a performance fix or infer a memory leak from a frozen frame.

Working notes

Record the last successful action and the next action before the freeze. Include the round phase and whether a menu, completion panel or other intentional blocking state appeared. If the design pauses interaction at the end of a round, inspect the next-step control rather than treating the intended pause as a global lockup.

Use harmless observations to see which surfaces still respond. Scene motion continuing while the player ignores input points to a narrower symptom than every game element stopping. If the app navigation itself does not respond, stop trying game-level controls and preserve the broader app-state observation.

Avoid rapid repeated input while the outcome is unclear. Queued actions would make it harder to identify which interaction preceded the freeze if the game resumes. Do not reproduce a freeze repeatedly when a single occurrence has already supplied a clear trace or when retries risk losing work.

A repair request should name the phase and missing response, not an assumed internal loop or memory problem. Preserve the latest known working interaction so the next test checks both the reported freeze boundary and a control behavior that should remain intact.

Examples

Narrow freeze trace: movement works until the result panel appears; scenery continues moving; the panel's harmless restart action gives no response. The first missing transition is restart, not proof that the whole app froze.
Broader freeze trace: the game was playable, then its animation, UI and surrounding app controls stopped responding after an observed action. Save the available state; do not diagnose a specific hardware limit from this trace.
Proposed behavior request: During the active round, the player stops responding immediately after the pickup event while the scene continues. Restore movement after that event and preserve the existing pickup result. This is a testable symptom, not a claim about hidden event wiring.