NOT Flappy Bird

A long shaft closes in with walls on both sides. In NOT Flappy Bird, a cube slides through that tunnel as the backdrop shifts and short sound cues mark each move, with high-score chasing tied to an endless arcade run.

How to play?

Tap to reverse the cube's direction the instant a ledge blocks the current path, then thread between the tunnel walls for another point. By default, sideways motion never stops, and survival lasts only until a collision ends the attempt. Further into the run, ledges crowd the route faster, pushing each reversal to happen earlier if you want a new record.