Epic Games has announced its acquisition of Rocket League developer, Psyonix.

The two companies have had a long-running relationship, with Psyonix working with Epic's Unreal Engine on titles including Gears of War, Unreal Tournament 2004, and Mass Effect 3.

Epic and Psyonix were also on the front lines of the battle to bring cross-platform compatibility to both Fortnite and Rocket League, respectively.

“Psyonix has always been a part of the Epic family, and we’re happy to make it official,” said Epic CEO Tim Sweeney. “We have great respect for how Psyonix has built an excellent team and an incredible community around Rocket League.”

The deal is expected to be finalised at the end of May, however details regarding how much Epic paid have not been disclosed.

"In the short term, nothing will change at all," Psyonix assured fans on its community blog. "We’re still committed to providing Rocket League with frequent updates that have new features, new content, and new ways to play the game for as long as you’ll have us."

"In the long-term, we expect to bring Rocket League to the Epic Games store and to leverage our new relationship to grow the game in ways we couldn’t do on our own before. We believe that bringing Rocket League to new audiences with more support is a win for everybody."

Upon bringing Rocket League to the Epic Games Store, the game will no longer be available for purchase on Steam, although support will continue for users that have previously purchased the title.