Choosing the game target
Pick Game as the build target and describe the loop rather than the screens: what the player controls, what opposes them, how a round ends, and how progress is kept.
Buildr generates a browser-playable game you can try in the preview immediately.
What works best
Simple, well-defined loops generate most reliably: puzzles, endless runners, tower defense, card and board games, and short arcade rounds.
Art, sounds and characters come from the assets library, or you can upload your own.