I keep thinking that a virtual arcade model could work well... you get N plays per day for free, but if you want to buy more "coins" you pay like $5 and they carry over...
Each version improves existing games in the arcade and/or adds new ones... you can play your 20 coins/day first, then buy extra if you choose... there's no reason that model couldn't work quite well.
Each version improves existing games in the arcade and/or adds new ones... you can play your 20 coins/day first, then buy extra if you choose... there's no reason that model couldn't work quite well.