Super Mario Galaxy
The game was originally planned as an updated version of "Super Mario Galaxy"; this version would have been called "Super Mario Galaxy More". It was later decided that the game was going to be developed as a fleshed-out sequel when the development staff continued to build upon the game with dozens of new ideas, and so development time expanded to two and a half years. Among the additions are dynamic environments, new power-ups, and the ability to ride Yoshi.