Great game, with very clever (and original) mechanics.Ashamed to say I struggled to get past Map 7, but that's coz I'm not up to the challenge! :DAll the best! ;o)
Thanks! Here's a tip for that level: first invert walls & floors (pick the 4 floors and drop them on the 4 walls), the solution should be easier then.
Or... you can skip levels with the Enter menu. :)