The Boundary Condition is an award-winning puzzle-platformer that explores the physics of cross-sections.  In each level, you may need to flatten into 2D or 1D in order to bypass obstacles. Squeeze through narrow gaps, climb steep slopes, and cross wide chasms.

Between the levels, discover the philosophical writings of a programmer who is working on a complex project involving a mysterious machine.  The sunk cost continues to sink deeper, but surely she'll find a way to pull it together in the end, right? . . . Right?