Great brain-teaser game similar to Humans and Quadrax, but with slightly changed idea. You can create sets of blocks to jump on them and reach higher floors, but you can't push them, the only way to change their location is to destroy them. Game requires good timing and jumping skill, but generally there's more thinking than action.
Download link:
http://85.8.5.199/daniel/games/castle.html
Download size: 1.6 Mb
Author: Daniel Remar
Date of release: last version - Feb 2006
Status: confirmed freeware