OK, I've seen this deal posted before and got really cold. But I was offered this today when I logged into my GMG account so I thought it could be of interest to some.
It is as it says, Mystery Bundle - 10 Pack for £2.59.
You could also get 1 game for £0.18 here https://www.greenmangaming.com/games/mystery-bundle-1-pack/
or 3 games for £1.29 here https://www.greenmangaming.com/games/mystery-bundle-3-pack/
I got all 3 packages for £4.06. All games seems to be indie, but I think I am happy with this as I haven't bought games for fun in a long while. Even had a duplicate :(
any comments or suggestions of what I should put in this description, please let me know