In the end I just wanted to slap every genesis game on there and enjoy the system. The only drawback to the Mega Everdrive X3 is that it will not load roms bigger than 4 Megabytes and it does not have support for EEPROM save based games.
I knew that I would not be able to play virtua racing (pfft), or Mortal Kombat 2 Unlimited or Ultimate Mortal Kombat Trilogy, (a excellent hack of Ultimate Mortal Kombat 3). With the prices of genesis games going up high like Cheech and Chong, I wanted to play everything, and so I bought the cart.
I bought this flash cart for my model 1 sega genesis 2 weeks ago.