crystalminer
Symmetry and crystals, block by block. Every world has a symmetry: whatever you build there is copied by every operation of its group.
Move
WASDwalk
Mouselook around
Spacejump
Kfly: Space up, Shift down
Jgo fast
Build
Right-clickplace a block
Left-clickremove a block, or punch a portal
1–8choose a colour (or the wheel)
Mshow or hide symmetry markers
Learn
Gguide to this place
Qquiz
Iyour progress
Pask Prism, the AI tutor
Hback to the Portal Hall
Escpause
Paused. Click Play to carry on.
Your progress and builds are kept in this browser. Best on a computer with a keyboard and mouse.