Betablight is a one-thumb neon-samurai arcade runner. A lone blade cuts through the dark while drones close in, biomes shift, and the katana runs hot.
Free • One-hand portrait • No ads • Global leaderboard
Portrait. One thumb. Zero menus to grind through. You're cutting drones within a second of opening the app.
Tap the LEFT or RIGHT side of the screen to slide one lane. Three lanes, one thumb, no swipe gestures to mis-read.
Tap the glowing button to slash drones in your lane. Chain kills for a combo multiplier. The blade runs hot — spam it and it locks.
Three hits and you're gone. The void speeds up, biomes shift every 75 seconds, and every early reaction earns late life.







Every 75 seconds the void shifts. New colors, new skyline, same blade. Each biome is the same game with a different mood pressing down on you.
Where the run begins. Magenta sunset over the old city, drones sliding between neon temples. The blade is still clean — don't get used to it.
Cyan downpour and chrome reflections. Visibility drops, timing sharpens.
Acid-green canopy lit from within. Ambient glow makes drones easier to spot — and the world faster.
The blood-red endgame. Speed peaks, the sky turns the color of warning, and the run bares its teeth.
Sit in one lane too long or mash the button — the blade overheats and locks until you move.
Chained kills pile a multiplier onto score and coins. Break the rhythm, lose the stack.
Sign in with Apple or Google and push your personal best onto the global board. Offline runs still count when you reconnect.
Short sessions, clean inputs, one more run.
"I opened it to kill three minutes at a stoplight. Twenty runs later I'd blown through the whole commute. The Crimson Void is a personal attack."
"The heat meter is what makes this thing work. You can't just mash the slash, you have to think with your thumb. It feels like a rhythm game got into a knife fight."
"Looks like a synthwave album cover, plays like an old arcade cabinet. Zero ads, nothing gating the fun. I've already booked my spot on the leaderboard."
Free forever. No ads. No pay-to-win. Just three lanes, one blade, and a drone swarm that won't quit.
Available on iOS via TestFlight • App Store launch coming soon