You will get more bids if you let people choose, and you have no feedback, If you don't give someone the opportunity to get what they want how can they trust you.
To be fair on who win's your auction, you should let them pic one of the games. Once the auction is over with winner. If you do it the way you say you are going to you wont get may bidder's and wont get a high bid on your auction.
I have a sneaky suspicion this is a fake auction. No feedback, no barters, don't answer questions and has a quite unethical way of doing auction. Lots of signs of a highly possible fake ad. If it isn't then I apologize but I guess we shall see I guess. Watching to see if I'm right.