This week Jake offes up a salute to his loyal polygonal friend, Guy brings some platforming trickery and we get a bouncy chessboard bonus!

Download this week's tests from the Steam Workshop:

Journey into a companion cube by the cake is a lie!

The twentieth chamber by T4auron

Aperture Science Chess Simulator by lisacgood

Have you made your own test chambers? Seen any you think should be featured? Let us know in the comments below, or tweet us @gamespotuk!