the game doesnt even launch on my system. i'm on a mac, and it says "tomb raider quit unexpectedly". I then reinstalled it, nothing changed. when i let steam verify the downloaded local game files (properties - local files - verify integrity of game files) it says: "1 file failed to validate and will be reacquired".
i also tried this suggestion from steam that i found on a forum somewhere:
Please exit Steam and go to the folder Users/[username]/Library/Application Support/Steam
Delete all of the files in this folder except for SteamApps and Userdata.
Restart your computer.
Launch Steam and re-test the issue.
But without success... any suggestions?