Write for a compact text composer
Prepare the core rules before opening the keyboard: one gesture, one goal, and one mistake consequence. A focused request such as “tap to choose one of three doors; find the exit before using two wrong doors; restart the same layout” is easier to review than a long specification. You can add a theme and polish after the basic decision works.
Test with the keyboard and hand position
After submitting, follow progress in Chat. When a version is ready, move to Playtest and check that the main action fits the phone screen. Return to Chat to ask for a targeted adjustment, such as making door labels larger or keeping the goal visible. Try both portrait and landscape if your prompt intends to allow either, and notice whether your thumb covers the cue you need. On wider layouts the chat and preview can sit side by side; on narrower ones, switch between the two views.
Know when you need a different iOS workflow
This creation flow produces a public playable game, not an App Store project. If you want a game editor designed for building from iOS, GDevelop publishes a guide to its iPhone and iPad app; review its current app listing and requirements directly. For the prompt-led route, keep earlier playable versions available as comparisons while deciding whether another revision is worth making.
Before sharing a completed version, check its public title and visible text. Avoid putting personal information into a prompt just because it was convenient to type on the phone.
Questions about make games on iPhone
Can I build an iPhone game without a computer?
You can create a prompt-led public playable version in the mobile app. If you need an iOS project or store submission package, choose an editor with that specific export workflow and verify its current requirements.
How should I test a game made on my iPhone?
Play it on the device, test the main gesture several times, and ask whether the goal stays visible while you hold it naturally. Then request one concrete change and compare the next version.