Rage 2 is down to $30

It has some bad reviews though. Something about the guns, don't remember what exactly.

That's for the PC version on Steam.

There's only 8 or 9 guns in the game.

That reminds me, Mad Max has a Linux version.

Additional Notes: AMD and Intel Graphics Cards are not supported at the time of release

Good luck playing Mad Max with a AMD GPU. According to the Linux site, it works with AMD GPUs, just not supported.