Danmit! I was was scammed by a user who used the Mailadress "firstname.lastname@example.org"
At that time, he called himself VONYER and later V0NYER.
you can revoke scammed games:
gog games via gog support
steam games via steam support
humble bundle games via humble support
you won't get them back probably, but the scammer won't have them eighter. so its worth the extra effort