PortableApps.com has released Atomic Tanks Portable 6.5. Atomic Tanks is a game in which you control an overly-powerful tank and attempt to blow up other highly powerful tanks. Players get to select a number of weapons and defensive items and then attack each other in a turn-based manner. It’s packaged as a portable app, so you can play wherever you’d like. It’s packaged in PortableApps.com Format so it can easily integrate with the PortableApps.com Platform. And it’s open source and completely free.