Play now says when a game's fix needs a newer macOS, before any question or download. Microsoft Flight Simulator 2024's engine needs macOS 26.5 or later, and 0.10.20 offered it on any macOS, where it then could not start. Forza Horizon 6's engine needs macOS 27, and Play says that too. You can still play without the fix, as before.
Also in this version:
- A game Steam has marked for an update now comes along to a new environment as a clone, and the new environment's Steam downloads only the update. Before, such a game was downloaded again in full.
- The memory note in Play's questions says what a game was tested with, 32 GB for Flight Simulator 2024, since smaller Macs are untested rather than ruled out.
- An engine is never installed on a macOS older than the one it needs, whatever asks for it.