Everyone else had answered most..
I just want to say for the record, I have all three bit corp games, authentic..
I cannot tell from those photos... only way to tell in a photo like that is to see the bottom connectors.
If they were not in that plastic baggie it would be easier to tell... the labels look too glossy though, from what I can see.
Like has been said.. I only know of about 3 Meteroic Shower carts in existence, maybe 3 Tank Wars, and maybe 2 Cosmic Crisis...
Chances are really good, since almost everything else this guy is selling is "bootlegged"
FIREMAN- that looks cool... if it is colecovision, I have never seen that one.. looks like a south american bootleg (of frantic freddy?)!
best,
willie