The slime is in a lab being tested, all the slime wants is the ice-cream at the end of the test so that’s your goal. To solve the puzzles you have to merge with objects to get their properties and in this way you can get through the obstacles to complete the stage.

Masks All The Way Down
The monster has given you the slip dozens of times, but you have finally caught him! All that’s left to do now is find out

