There’s an inner starting room with only visual hints as to what to do: there are gates with four holes, and four doors. Go through door 1.
Room 1 gives the impression it’s a dead end, but it’s not. (Maybe) A mechanic reveals a pillar in which the first ball is hovering. But you can’t see it, and have to walk through. Cue the visuals to hint. Take the ball and place it in the gate. Door 2 opens.
Room 2 has a puzzle that make you guess to get rid of the wall closest to the starting room. Note that the “3D” effect is unintentional. Those are trapezoid rooms. Take the hovering ball behind the wall and plug it - not on the gates, but in door three.
Room 3 is a labyrinth in which you find Ball 3. The third door will be automatically opened at the end and you’ll have to take Ball 2 back. Place both on the gates to open door 4.
Room 4 is a (maybe) celestial farm of space cows. You complete the Bulls and Cows game. The answer is the name of the cow holding the last ball. I still don’t know how you take it, but you do, and finally open the gates.
Your reward for winning is a cookie.
