iPhone
One tap. The box turns, the balls fall.
Turnbox is a one-finger physics puzzle. You tap, the box turns 90°, and gravity takes the balls. Drop the white ones through the exit and keep the red one inside. It looks simple — by the third chapter you weigh every single tap.
Tap to turn. Hold and it turns again by itself once the balls settle. That is the whole interface.
Ten chapters, each opening a new rule: sliding walls, jumping exits, glass and iron balls, ceiling hatches, time pressure.
Two arenas side by side — solo with one tap for both, or two players facing each other on one phone.
Fully playable offline. No account. One optional purchase removes the ads between levels.
Free to play, even offline. Nothing to sign up for. Ads never interrupt a level, and one purchase removes them.