NP, good luck :)
It is one of these "Mystery Budles". You pay somewhat little price for a few keys (most of the time its about 7$ per 10 keys) and you have no idea what those games are. Many times its just some type of nearly shovelware games, but sometimes there are nice games included :)
Can't reccommend it though, tried few of those on multiple sites that offer them (Fanatical for example), and got some duplicates across the sites (since you can't pick those games). But hey, at least i have something to give away :)

Congratz :)
Have fun!