GNU Robbo is a free open source reimplementation of QXLand’s Robbo for the Atari XE/XL from the late 1980s. The gameplay of the original is faithfully reproduced with a few modifications.

Changes:

this is GNU Robbo 0.65-8 with smooth scrolling, and music support.

http://dl.openhandhelds.org/cgi-bin/caanoo.cgi?0,0,0,0,25,653