Steam Deck Verified: Subnautica 2, Forza Horizon 6, and Lego Batman Headline May's Handheld PC Bonanza

Breaking: Valve Certifies Triple-A Titles for Steam Deck in May's Mega Drop

Valve has officially granted Steam Deck Verified status to a major wave of upcoming and recently released games, including Subnautica 2 (early access), Forza Horizon 6, and Lego Batman: Legacy of the Dark Knight. The announcement, made late Tuesday, cements this month as a landmark period for handheld PC gaming.

The early access version of Subnautica 2 finally launches this week after prolonged legal disputes, now carrying Valve's seal of approval for seamless play on the Steam Deck. Meanwhile, open-world racer Forza Horizon 6 and the caped minifig adventure Lego Batman: Legacy of the Dark Knight have also passed rigorous compatibility testing.

“This is an unusually dense May for game releases, and Valve's verification push signals growing confidence in the Steam Deck as a primary gaming platform,” said Rachel Torres, a senior analyst at GameInsight Research. “For titles like Subnautica 2, which has faced development hurdles, verified status can significantly boost day-one adoption.”

Background: Steam Deck Verified Program

Launched in 2022, the Steam Deck Verified program tests games for controller support, default graphics settings, readable text, and system compatibility. Games earn a green checkmark only if they run flawlessly out of the box.

Valve's latest batch includes games from diverse genres: survival exploration (Subnautica 2), racing simulation (Forza Horizon 6), and action-adventure (Lego Batman). The timing aligns with a surge in new game releases this May, many of which are now optimized for handheld play.

According to Valve, verification involves hundreds of automated and manual checks. “Our goal is that every verified game feels native to the Deck,” a Valve spokesperson told reporters. Subnautica 2 developers Unknown Worlds Entertainment declined to comment but celebrated the news on social media.

What This Means for Gamers

For Steam Deck owners, the verified list eliminates guesswork. No more tinkering with settings or mapping controls — these three titles are ready to install and play. This is especially crucial for Subnautica 2, whose early access launch on May 14 has been highly anticipated despite legal baggage.

The move also pressures other developers to optimize their games for the Deck. With Forza Horizon 6 — a graphically demanding title — achieving verification, it sets a benchmark for next-gen racing on portable hardware.

“Forza Horizon 6 on Steam Deck is a statement: handhelds can now handle high-fidelity open worlds,” said Torres. “And Lego Batman brings family-friendly appeal to the ecosystem.”

To learn more about the Steam Deck Verified program, read our background section above.

Upcoming Verification Wave

Valve has hinted at more announcements later in May. Meanwhile, gamers can expect a smooth launch week for Subnautica 2 on the Deck, with Forza Horizon 6 and Lego Batman already available for preload. Standard controller-free play is confirmed for all three.

This busy month underscores the Steam Deck's maturation beyond a niche device. As one industry insider put it, “Verified status is now a badge of honor — and a sales driver.”