Anachronistic antagonists including toy knights, flying saucers, spacemen and the mighty Mr. Roboto will spill onto the Toy Soldiers battlefield in three singleplayer levels, two multiplayer levels and one for survival. Luckily the cross-over works both ways, as players will get to command the P51 Mustang aeroplane and F-17 Space Tank.

'Invasion' will cost 400 Microsoft Points ($5) when it launches on September 29.