Zball IV Steam CD Key

Zball IV is the return of physics puzzles series. Now there are portals that instantly move objects to another location. When moving, the speed of the object is saved, so you should be careful when moving. The rest of the game rules remain the same. You can use 2 types of objects to change the direction of gravity. The 1st one is a button - just press it to change the direction of gravity. The 2nd one is an activated object that change gravity when it collides with a green ball. Blocks can ha...