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Koalabr8 - ECRZ

One more sample app from the book Game Maker Apprentice, with fixes so that it works in GM:S, and supports operation without a keyboard (e.g., on a touchscreen)

A colony of koala bears has been captured by the evil Dr. Bruce for use in his abominable experiments. The koalas managed to escape but the doctor had implanted some kind of mind control device in their brains and all the koalas must combine their thoughts and perform the same action.

The arrow keys (green arrows on screen, or keyboard) will simultaneously move all the bears on a level, except bears whose paths are blocked by a wall or another bear.

Help all koalas get to the exit without touching any of the fatal hazards (explosives, saws) scattered around. Use other
objects in the room to your advantage.

Gameplay is a mix of a maze puzzle and sokoban