This is not a thread for your game ideas that you think are brilliant, (not saying that they aren't), this is a thread for ideas that any idiot working at a video game company must realize is a guaranteed money maker. It's an idea so guaranteed to succeed that the company is leaving gobs of cash on the table by not doing it. So I want to know what those ideas are and why you think they haven't been done.
The Pokemon MMO. This game should have been made 10 years ago when Everquest and WOW were launching and that game would probably now be as big as WOW thanks to Nintendo constantly changing venues, new Pokemon, it's TV show and their trading cards. Even though Pokemon has seemingly died down it's still ridiculously popular and constantly finding new audiences. Imagine if they launched a Free to Play version of that game now where you buy slots to hold Pokemon or items like Rare candies and TMs. You could sell the HMs to people as a way to get to new locations in the game. Plus the best part is you wouldn't have to do a PVE and PVP server. It could all be just one large server where gamers link up, battle and capture Pokemon together.
The reason this brilliant idea hasn't been made is simple; Nintendo owns the license. Judging by how Nintendo has acted the last couple of years I feel it's safe to say that Nintendo treats the internet like some sort of fad. A lot of games that use their multiplayer services are lessons in how to design non-intuitive peer to peer connections through the web.
Nintendo also seems scared by kids having any kind of negative experience they can't control. Never mind that there are a couple of MMOs that already cater directly toward kids Nintendo is too scared to even try.