Hadron 0.2.0

Steam's overlay now works in Hadron games, and a mouse lag it was causing is gone.

New: the Steam overlay. Shift+Tab opens Steam's overlay in a game, as it does in a Mac game. It is Steam for Mac's own overlay. While it is open the game gets no mouse or keyboard input and lets go of the cursor, so the overlay can be used without pausing first; whether a game pauses behind it is the game's choice.

Fixed: the camera lagging while the mouse moved. Steam's overlay library used to be loaded into a game too late to work, and in that state it stalled the game each time the mouse moved. It was easy to see in Subnautica, where the camera stuttered while turning. The overlay is now in the process from the start, which is also what makes it work.

Tried with Subnautica (Direct3D 11), Portal 2 (Direct3D 9), Teardown (Direct3D 12) and Geometry Dash (OpenGL). A game that uses Vulkan directly takes the same route as the last two and has not been tried yet. If the overlay misbehaves in a game, please save a report from Hadron's window and open an issue.

Updating: install this version over the old one (brew upgrade --cask hadron, or replace the app from the disk image), then open Hadron and click Repair.

New here? Hadron is a compatibility tool that lets the native Mac Steam client install and run Windows games on Apple Silicon. It needs macOS 27 and Steam for Mac.

brew install --cask broyojo/hadron/hadron

or download Hadron-0.2.0.dmg below, drag Hadron to Applications, open it and choose Set up Steam. The README has the steps, and the list of games tried says what runs.

Setting up modifies and re-signs Steam.app; Uninstall in Hadron undoes it. Hadron is unofficial and not affiliated with Valve.