Endless Runner Maker: Build a Flappy-Style Game with AI

The one-button formula

Every flappy-style game is three ingredients:

1. A constant pull — gravity, a rising floor, a chasing wall. Doing nothing loses.
2. One input that fights it — tap to flap, hold to rise, press to jump.
3. An endless obstacle stream — gaps, pipes, gates — that demands rhythm, not memorization.

That's it. The genius is in the tuning: how heavy the pull, how punchy the tap, how tight the gaps. On Arcade Sandbox you describe the trio and tune by revision: "gravity a touch lighter, gaps 20% wider at the start."

About "Flappy Bird clone maker"

Quick honesty: the flappy formula is fair game — one-button gravity games existed before and after the bird. The name and the art aren't yours to use, and a literal clone is also just less fun to share than something that's yours. So keep the physics, swap the fiction: a moth in a cave, a paper plane in an office, a submarine in a trench, a bee in a garden of closing flowers. Ten minutes of AI building gets you the same dopamine loop wearing your joke.

What separates addictive from annoying

• A ramp you can feel. "Speed increases 2% every 5 points, forever." The game should outgrow the player, never plateau.
• Near-miss rewards. "Bonus points for passing within a whisker of an obstacle." Grazing danger is the fun; pay the player for it.
• Instant restart. "Death to retry in under one second, no menus." One-more-try dies in a loading screen.
• A visible high score. The real opponent is your previous self — and the group chat.

Prompt recipes

"A one-button flappy-style game: a clumsy moth flies through a dark cave, tap to flutter upward, dodge stalactites and stalagmites with glowing gaps. Speed ramps forever, near-miss bonus points, instant restart, high score with a funny rank name for each tier."

"An endless runner where a skateboarding grandma bombs a hill through a farmers market: jump crates, slide under awnings, collect jam jars for a speed boost. One-more-try pacing, screen shake on wipeouts, encouraging messages from her grandkids at each milestone."

"A hold-to-rise runner: a hot air balloon drifts through a canyon of moving rock gates. Holding heats the balloon up, releasing sinks it. Wind gusts telegraph one second early. Calm music description, brutal difficulty."

Tune it like the pros

Build, play ten runs, then revise with intent — this is the entire discipline of runner design, compressed:

• Dying before 5 points? "Widen early gaps and delay the speed ramp."
• Bored by 50? "Introduce a second obstacle type at 25 points and moving gaps at 50."
• Deaths feel unfair? "Shrink my hitbox 15% smaller than the sprite." (Every beloved runner does this quietly.)