Mode 7's indie tactical-combat darling Frozen Synapse is coming to retail via a special boxed edition this fall, courtesy of publisher Merge Games. This collector's edition will be compatible with both PC and Mac, and tosses in the game's soundtrack, a sticker and postcard, plus a Steam key to unlock an additional copy of the game for a friend or curiously nice enemy. Hey, it's none of our business how you treat your enemies!

The Red expansion pack - an update from back in May that added co-op gameplay, a new unit, a new game mode and a host of new missions - is also included in this collector's edition package. Frozen Synapse: Collector's Edition will be exclusive to UK retailers and launches on September 7.