http://www.albartus.com/motas/
Currently on the level with the elevators...
It has no speed, so I think I can play it.
For the first 12 levels I played with a walkthrough a long time ago, so I don't know if it's a genuine crack or shreds of memory. Probably the latter.
Had to read a small hint on level 15 -- turned out I simply mixed up two of the images, and actually figured it out by myself, so...
And read a hint on 16 -- I was just blind not getting the versions the first time...
EDIT: OK, I finally beat the game, but I'll be darned if I could figure out 17 and 18 without a walkthrough. That's just trial and error.
Other levels were very good though.