Drag to look around · adws or arrows move · q/e kata/ana · 1–6 turn, with shift the other way · space drop · x step down · z undo · v/b turn the 4D view
A falling-block puzzle with one more direction. The floor of the well is a whole cube, so a layer is full only when all of its cells are filled, across every step of ana and kata. Pieces turn in planes, a quarter turn at a time. Nothing falls until you drop it, so take your time.
The left view draws the well like a tesseract: cells further toward ana sit in the outer shell, cells toward kata in the inner one. The right view cuts the same well into ordinary 3D slices.
Made by Faruk Eren Ciracioglu with Claude Opus 5.5.
Contact: erenciracioglu@gmail.com
MIT licensed · Source on GitHub · Also: Tesseracting