Dogs In Space (Unhacked Version)

Game Information
Space dogs Belka and Strelka are in trouble! They have accomplished their mission on the Moon base and now they should return home. Unfortunately Space Command Center can't send any pilot for them. Help Belka and Strelka to escape from the base.

Dogs in Space is a platformer puzzle game with two characters who cooperate with each other. You control one character at a time and can switch between them.
Instructions
Arrow keys - move
Space - action
Tab - switch characters