Get the two aliens to the end of each of the 30 challenging levels. Maybe not as easy as you think because the aliens are on opposite sides (one up one down) of the landscape and you control both at the same time.
Get each alien to its own colored exit at the end of each level. But first you'll need to get the key to unlock the level by getting the required number of colored diamonds on each level. Controls: Keyboard - WAD or arrow keys to move and jump. R key to restart level. Controller - D-Pad/Left Stick to move A to jump B to restart level. Touch - Use on-screen buttons to move and jump.
8 Poo
Cute
Unico
Pixel
Baby
Red I
Cubes
Taxi
Knock
Multi
Run N
Gems
Merge
Socce
Worm
Erudi
Billi
Block
Giddy
Astro
Panda
Save
Drift
India
Eg Je
Noob
Kitty
Car R
Short
Block
Arche
Spide
Baby