Write the prompt around a playable rule
The prompt identifies a launch gesture, target sequence and failure boundary. Numbered targets give the player a clear objective beyond watching random bounces. Keep bumper placement and ball response consistent so a player can learn from a shot. If the aiming gesture controls direction as well as power, show both in the preview.
Original concept prompt: “Build a one-screen bumper challenge. Pull back and release a ball from a visible launcher; it bounces off soft bumpers toward three numbered targets. Each target lights when hit, and the goal is to activate all three before the ball falls into the drain. Show the launch strength and reset after a run.” This is a recipe for an idea, not a claim that this exact game is already playable.
Play, observe and refine one thing at a time
Try a low and a strong launch and note which targets each can reach. Check that a hit target lights immediately and does not count twice unless that is intended. If the ball takes a long time to drain, shorten the board or add an understandable way to launch again. If target order is unclear, number them more prominently.
Use bumper placement to create new routes rather than adding many target types. A later layout can put an optional score target along a safe path and a harder target near the edge. Change one board feature at a time and replay the same shot. This makes it clear whether the layout or launch behavior caused an improvement.
Avoid a board filled with visual effects that obscure the ball. Keep the drain and scoring targets easy to track. If physics varies unpredictably between nearly identical launches, simplify the bumpers or request more consistent rebounds before making the layout more complex.
Playable reference for this prompt: Plinko. Tap to drop balls through a musical peg board where x2/x3 gates clone them into cash buckets, and the run ends when you run out of balls. Use this example to compare the proposed rules with a game you can try now.
Questions about pinball game prompt
What makes the bumper challenge complete?
All three targets need to light during the same run before the ball drains. Test repeated hits so one target cannot incorrectly count as several.
How do I prevent a ball becoming stuck?
During testing, try shallow launches and corner contacts. Ask for a recovery rule if the ball stops making progress, and make that rule visible to the player.