I've noticed Garry's Mod has been in the top 20 best selling games on Steam for the past few days (in the 15-20 range). Any particular reason for that?

I know the game has steady sales, but I don't think I've seen it crack the top 20 anytime in the past 2 years until this week. I don't think there was a sale.

No idea... Garry is working on adding a ton of new stuff to the next version, but that's not coming for awhile.

I am sort of in a break period with that game, so I wouldn't know.