Microsoft confirmed the first wave of May 2026 Xbox Game Pass additions on May 5, and followed up on May 8 with the week-by-week schedule. The headline is two day-one launches that would each justify a subscription on their own — Forza Horizon 6 and Subnautica 2 — released within five days of each other.
Subnautica 2 enters Xbox Game Preview on May 14, with Game Pass Ultimate and PC Game Pass subscribers getting it on Cloud, Xbox Series X|S, handheld, and PC. The big addition over the original is four-player co-op, though Unknown Worlds has framed it as opt-in — solo remains the default loop. Steam Early Access also goes live the same day.
Forza Horizon 6 ships May 19 across the same Game Pass tiers, with a Premium Upgrade unlocking the early window on May 15. The setting is Japan — over 550 real-world cars, Sakura-lined avenues for cruising, and Touge-style mountain races as one of two main progression tracks. Playground Games has spent five years between mainline Horizon entries, the longest gap in the series.
Also landing this month
Directive 8020, Supermassive Games’ next branching-narrative horror, hits May 12 — sci-fi survival aboard a spaceship where the crew may not be human. Mixtape arrives May 12 as well, an indie narrative road-trip from Beethoven & Dinosaur. Indiana Jones and the Great Circle joins the Switch 2 lineup the week of May 11, expanding the title’s reach beyond Xbox and PlayStation.
The throughline: Microsoft is front-loading Game Pass with day-one anchors at exactly the moment the EA take-private deal is closing and Nintendo is raising Switch 2 prices. Whether that strategy holds when the post-GTA 6 release calendar thins out remains the open question for the rest of 2026.