According to my extensive magazine collection, Dwarfstar Games was an imprint of Heritage USA, a company active in wargaming and role playing between 70s and 80s. Dwarfstar Games was particularly charged to produce games in the minigame format pioneered by Metagaming Concepts in the '70s. At the beginning ot the '80s various companies (Metagaming, SPI, TSR, Mayfair, Heritage, Steve Jackson Games, Task Force Games) were jumping on the minigames bandwagon. It apparently died out around 1983-84 and this is a pity: judging from the reviews, many games were good or fine and they had a very affordable price. I have no decent words for Steve Jackson games reprinting Raid on Iran for $ 30-40... I suppose these minigames command a high price because intact copies are hard to find and perhaps because many buyers remember fondly their misspent youth playing them (perhaps they were the only games they could afford).