In this short narrative puzzle adventure, you play as a tester who has to overcome increasingly harder logic puzzles. Room by room, your actions will be commented on by a test supervisor. Place different sizes of cubes on buttons in first person to solve logic-gate-like riddles.

I won't tell you how to solve the puzzles though, so good luck!

The first room you appear in, I have labelled Room 0.

For a more informative guide by Lord Crocosquirrel, have a look here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2672087364

This one is special
Found the favorite cube of Mark.
Pick up all Cubes until you find it

Talk to me
Hitted a speaker with a cube.
Pick up a Cube and throw/place it toward the speaker.

Build to last
Tried to damage a camera with a cube.
Pick up a Cube and throw/place it toward the camera.

Cubes only
Stood on a button that is designed to accommodate cubes only.
Can be done in any room.

I like this view
Looked out of the crack in the wall.
Turn right then walk to the wall and look closely.

Don't get your head stuck
Put your head in the cube container in the eleventh room.
Walk under the cube container and jump around.

The rest is Story related and will unlock as you complete all rooms.

Note:
Room 13
Remove the board on the left wall, and use a cube to jump through the wall.
(You can't actually complete this level normally)

After the credits, go back to the menu, options and enable Party Mode.

100% !

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For my other guides, they are here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2880052179