Reliquarium
3D slider puzzles for kids; helps teach solid geometry
... the cursor rotates the cube for a better view angle. The mouse wheel zooms. Typing a number 1..8 selects a block to move, 0 selects the relic itself. Then use the keys {u,d,l,r,f,b} to move it.
The proper command to extract the archive and maintain the directory structure is "7z x filename".
These unique puzzles are spatially challenging, yet easy enough for children and will likely help with learning 3D visualization, geometry, problem solving and computer skills.