- One‑tap gravity flip runner: glide between floor and ceiling and time your flips on the center line.
- Dodge top/bottom barriers while grabbing black orbs (coins) and occasional shield power‑ups at midline.
- Speed ramps and spawn intervals tighten over time; maintain streaks to build combo bonuses.
- Clean light‑mode visuals with a subtle center guide, responsive canvas, and optional sound/haptics with pause.
- Single‑file HTML/CSS/JS in a fixed 500×800 frame with autosaved best score for “one more run” replayability.
