This is a question I think about a lot. I've got three ideas, but these are a bit out-of-date. The Pokepark Series: I'm a huge fan of these games, but it hasn't yet been updated for the Gen 6. WHY?! It would be so awesome to go around with all the new Pokemon! And Mega Evolution could up the gameplay even more! This series NEEDS a sequel. The Sonic Adventure Series: Now, you could say that Sonic Heroes (or... *Cough* 06 *Wheeze*) could be considered sequels. But they're not true Sonic Adventure! The games have awesome controls, awesome story, awesome music... that is Sonic at his best. WE NEED A SONIC ADVENTURE 3, PEOPLE! The Super Mario 64 series: This series already has two installments (well, three if you count Sunshine) but we need more of this awesome format. And sure, the Super Mario Galaxy series could be considered a successor. In that case, give us Galaxy 3! Well, that's my opinion. Now, how about you guys? What do you think we need sequels to?