SOMNIUS is out now in Steam Early Access, released by STFGames on September 22 after an early September announcement. The co-op escape game supports up to six players and uses a Vacuum Gun to fire objects and players into a portal.
STFGames announced SOMNIUS in early September 2026 as a co-op escape game for up to six players on PC through Steam. The pitch was a physics-driven one: players use a vacuum gun to suck up objects and other players and convert them into portal energy, opening an escape from a collapsing dream world. At announcement, STFGames said Early Access would begin in September 2026.
That window held. On September 22, STFGames released SOMNIUS in Steam Early Access, and the final release details fill in what the announcement left open. The game is priced at 1,050 yen, discounted to 651 yen through September 30. The Early Access period is planned to last about one year. The developer is STFGames, previously known for Stone Simulator.
Across the two stories, the mechanics stayed the same: a six-player co-op escape game built around the Vacuum Gun, which sucks in objects and fires them into a portal. The only movement is from announcement to release, with the price, discount window, and one-year Early Access plan arriving with the launch. The coverage does not say how the game has performed or what state it is in on Steam.
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STFGames, the developer of Stone Simulator, released SOMNIUS in Steam Early Access on September 22. The co-op escape game supports up to six players, who use a Vacuum Gun to suck in objects and fire them into a portal that opens an escape from a collapsing dream world. It is priced at 1,050 yen, discounted to 651 yen through September 30, with an Early Access period planned to last about one year.
STFGames, developer of Stone Simulator, has announced SOMNIUS, a co-op escape game for up to six players, for PC via Steam. Players use a vacuum gun to suck up objects and friends, converting them into portal energy to escape a collapsing dream world. Early access begins in September 2026.