Little Big

Tap to switch size of jumping ball to avoid obstacles.
The player controls the size of the ball, jumping over an endless
wall. Tap and the ball becomes large, the next click makes it small
again. To go through the gate or to avoid spikes, the ball must be
small. But to jump over a break of wall or raise a coin, it should be
large.
The game allows to collect coins, which are needed to unlock new
heroes and new worlds.