The creator of the Impulse digital distribution service, Stardock, is releasing its titles on Steam.
Sins of a Solar Empire: Trinity is the first game to go live on Valve's rival system, now available at a 25 per cent discount. The same offer is running on Impulse to promote the announcement, according to GamesRadar.
While Stardock initially had direct ties to Impulse, it is now free to sell its games through other platforms following GameStop's acquisition of the download service back in March.
"With the sale of our former PC digital download technology to GameStop earlier this year, we no longer have any conflicts of interest in offering our title to other digital distribution channels," said Stardock CEO Brad Wardell.
"We are starting with Sins of a Solar Empire: Trinity, with other titles being made available over the coming weeks."