An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include: Added 64-bit support for Windows/Linux client and server Should include performance improvements for most users Bugs can be reported here: Fixed an exploit related to uploading invalid custom decals that would crash other clients
that's the main reason almost all volvo games don't run on non-32bit MacOS[1][2].
[1] every mac since 2011 is 64bit only
[2] despite there being reports of the source engine compiling to 64bit just fine and copying assets of specific games seemed to work