Flipside

🔄 Two Worlds, One Button

A neon precision platformer where every level has an upper and a lower world. One key flips gravity — and the gap between the worlds is where you live or die.

✨ Features

• 14 handcrafted levels, each with a top world and a bottom world
• One-button gravity flip — that's the whole control scheme
• Coyote time & jump buffering — the game never eats your input
• 8-frame hover window after each flip to thread tight gaps
• 3 shards per level — shards you take are kept even if you die
• Ghost replay of your own best run, racing alongside you
• Every level solver-verified — exit and shards are always reachable
• Tuned 60Hz physics — identical on 120Hz and 144Hz screens
• Instant respawn — no loading, just go again
• Original music & sound effects — one-tap mute toggle
• English by default, one-tap switch to Chinese at the top-right

🎮 How to play

• Desktop: Space or ↑ to flip gravity, ← → to run.
• Mobile: tap to flip, drag to move.
• Grab the shards, reach the exit. Every death is on you — never the game.

Runs in any modern browser — desktop, tablet and phone. No download, no account, progress saved locally. Plays in English by default; one tap switches to Chinese.

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Part of BrainBox — free brain games that run in any browser. More games coming soon!