The first issue of Ares Magazine featured a game called “WorldKiller, The Game of Planetary Assault.” There’s also an interesting article on the “most significant science fiction and fantasy games” by (among others) Greg Costikyan. It’s a nice little piece of history and a glimpse to what was state of the art nearly forty years ago.
This video has some really nice ideas for making cheap terrain for Star Wars Legion and other science fiction games.
Issue 12 of Ares Magazine (January 1982) featured a complete board game called Star Trader, The Game of Intestellar Exploitation and Piracy. The board looks really neat.
One Page 40K Rules are a set of simple rules for the 40K Universe. The authors write:
One Page 40k is a single-page ruleset designed to be fast to learn and simple to play. It serves as a great introduction to the Warhammer 40.000 universe for people who are new to the game, and as a way to play quick games for veterans of the franchise.
The internet archive has a digital copy of the old SPI science fiction and fantasy gaming magazine Ares. Issue #11 features a full board game called “Albion Land of Faerie.”