download The Parallel Cat by Yohji 3.2MB
Juni’s cat goes missing (a not unprecedented happenstance in levels) and Juni follows it through her irresponsible neighbor’s portal to discover an inventive use of semitransparent patterns, along with appropriately otherworldly music. This level is not particularly long; it is built partly around the minor challenge of clambering onto and over some of the jutting protrusions inherent to this tileset – without the benefit of running or climbing.
Well, you CAN get the climb powerup, but the other part of this level is being tricky with its powerups…
Here’s the forum topic if you want to learn more.