Space Ball Alternatives
Space Ball is described as 'is brilliant, bright game that put you into the beautiful scenery of open space. Astounding 3 -d effects, many traps and obstacles will keep you busy for hours of playing. You want to know how to play?!' and is an app. There are five alternatives to Space Ball for a variety of platforms, including Mac, Windows, Linux, iPhone and iPad. The best alternative is Rasmol, which is both free and Open Source. Other great apps like Space Ball are QuteMol, pymol, Fly BalloonFly! and RasTop.
RasMol is a computer program written for molecular graphics visualization intended and used primarily for the depiction and exploration of biological macromolecule structures, such as those found in the Protein Data Bank.
QuteMol is an open source (GPL), interactive, high quality molecular visualization system. QuteMol exploits the current GPU capabilites through OpenGL shaders to offers an array of innovative visual effects.
Guide Your Balloon Through the Skies in Fly Balloon, Fly! 1.4 - Update.