Aptly named puzzle game Stacko has you making stacks of colored disks to match the target shown each level. But things aren't as simple as just dropping these blocks on top of each other. Instead you must careful let them hop down and using their movements to stack each other.
You've only got a few clicks to light all the hexagons up in this simple but stylish puzzle game by Kings Kollege, also free for Android. Click a tile to turn on all the adjacent ones, but watch out! In later levels, some tiles can only be manipulated a few times, or not at all.