Round Em Up is an arcade puzzle game where the aim is to get the sheep (the white blobs :)) into their sheep pen (the lighter green area). You do this by guiding them to the sheep pen by placing the primary obstacle the bushes or special items such as rocks or pits. Full details on the game can be found in the readme included with the download.

http://archive.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,25,2357