There has been an Atari 8-bit version of Lunar Blitz based on the same C64 disassembly as the C16 and VIC 20 versions which has been sitting around for nearly nine years, but, apart from an occasional showing "live" at events, it hasn't seen the light of day. That's now sorted after a couple of days fixing up and improving the code for release on the 2014 New Years Disk - happy new year and all that gubbins!