From the Warlord Games website
The ancient Gates of Antares link or isolate worlds across countless galaxies. The evolved panhuman races wage unending war to control the Gates and the undiscovered systems beyond.
Take on the battling forces of the Concord IMTel, the symbiotic Isorians, the bio-adapted Boromites, the twisted Ghar Empire or the warlike Algoryn Prosperate to claim control of the Gates that lead to new planetary systems to trade and colonise.
With each faction bringing a unique twist to the otherwise simple rules, roll the Skirmish dice to score victories on your campaign and claim the Gate. Each player’s round represents a military offensive that will give the chance for scoring victories, but be aware of the Fate dice opponents will play against you as they can twist your results and turn a clear victory into a total failure!
It's an interesting idea and they have the rules free to download here.
Not exactly my thing, but if it gets me interested in the G-o-A universe (which I'm struggling to connect with at the moment) then it's worth it for just under £16.