Growing up playing a Mega Drive I thought I would love this game but having bought it recently I promptly took it back!
The following things were very annoying:
The graphics are awful - I thought I would be able to play the classics with HD graphics but they definately have not been updated!
The sound continuously drops out mid game
None of the game plays in widescreen and to make matters worse there is another border around the game play - therefore playing on a 32" HDTV was equivalent to playing on a 22" Tube Screen.
There is so many filler games!
On the plus side it was nice to play Sonic and Ecco the Dolphin - for five minutes!
Do not buy this game for more than 35 it would be a waste of your hard earned cash!