Atari has made legally dubious accusations based on the knowledge that Minter has no chance of defending them from a financial basis, despite them being all based pretty much on "looks a bit like tempest" which in the game world doesn't hold up. no trademarks are infringed (tempest 2000 was allowed to lapse) and he's accused of stealing code that he wrote - despite the game being a total ground up re-write based notionally on a game he himself wrote nearly 20 years ago in ASM on a platform (Jaguar) totally different to the one TxK runs on (PSVita and probably C++)
http://pastebin.com/HHCZwyEd cache of
http://yakyak.org/viewtopic.php?f=2&t=85897