1. Ability to exit a normal level like in the level editor or time challenge modes
2. Stop the timer when the player touches the last dimension ring near the end of the level and when the boss starts exploding after the player deals the last hit on the boss in time challenge mode. The timer should also flash when the player has less then 10 seconds left
3. Add Sonic medals to Gene Gadget and Panic Puppet levels to encourage exploration in those levels
4. A ring challenge mode where the player must beat the level with either 50 or 100 rings in hand (with a no-hit boss mode where the player can't take any damage in the boss levels).
5. Boss attack mode where the player plays through all the bosses in succession.
6. Special stage mode where the player plays through all of Tails and Knuckles special stages in succession either together or as separate stages like all of Tails as one stage and all of Knuckles as another one.