RotaBall is a marble-sorting puzzle. Coloured balls roll along a rail,
drop into rotatable four-cup rings, and travel through pipes. Fill a ring
with four of the same colour and it explodes. Clear every required ring
to finish the level.
Later boards add colour gates, dye pots, one-way arrows, flip-flops,
shared cups, padlocks, brass hourglasses, and lights that demand a colour order. A teal siding is a holding bay. The patience bar under the rail is a life
if you leave a ball waiting too long.
One hundred hand-built circuits. Each clear awards a five-letter password.
No accounts. No ads in the puzzle itself.
Spin the rings, send the balls, and explode every bearing.