
Match space gems to blast a parade of cute aliens before they reach the otter's moon base.
An otter astronaut guards a little moon base, and a parade of cute aliens is marching down the space lanes toward its wall. Swap space gems on the board to line up three or more: every gem you clear shoots up its lane and bonks the first alien in the way. Each alien carries a bubble with the gem it fears, and matching that gem hits three times as hard.
Line up four for a line blaster, an L or T for a nova bomb and five for a galaxy that sends homing stars at every alien weak to that colour. Chain cascades for big combos, collect medals that merge into free power-ups, and face fast saucers, armored beetles, splitting jellies, lane-hopping bunnies and a giant squid boss every fifth level. Keep your three hearts safe to earn three stars on all 40 levels.
Swap two neighbouring gems to line up three or more. Cleared gems fire up their lane at the aliens; the gem shown in an alien's bubble deals triple damage. Stop every wave before the aliens reach the base wall: each one that gets through costs a heart.