I have an idea for a game you do the Stickpage.
you make a game like stick rpg and adventure, where you can create your own character and place face, clothing, color and weapon he will use, this game will have to be spending the next level and win things at the level of spending, it also has to fight the monsters for the game and other players too, has to be of account type you come and create an account and play online against or with another team.
has to be a good game and cool that you play once and then not stop more type: combat arms, magiccampus, crossfire, Diablo3, etc..
also have to have money to buy the weapons in the game and level up your weapons and armor too.
also have to have some very difficult bosses to fight you have to kill it with a team.