might be able to become prepaid but not entirely sure. It does Not take a sim card, an SD card is not included, if bids get high enough I may add a charger
You can download a variety of different games from the Play Store, many of which are free. Yes, it is Wi-Fi capable, meaning if you're around Wi-Fi you can connect to it with this phone.
I had that phone and it can do a lot but I found putting stuff on the ad card works better then having a lot on the phone since it slowed it down a lot I now have a iPhone 4 which I love