Sonic Compilation (Europe) ROM

Back in the day cartridges ruled the world, having so many carts running around one's room was a pain. Sega then created this special concoction to help ease the maintenance of games, and also as a pack-in for the last batch of Megadrive/Genesis consoles, sporting a compilation of the first 2 Sonic games with the addition of Dr. Robotnik's Mean Bean Machine.
This special 1995 (Europe)/1997 (US) compilation brings us Sonic the Hedgehog 1, in all its unmodified glory, and Sonic the Hedgehog 2, also unmodified.
The third item, Dr. Robotnik's Mean Bean Machine is actually a special version of Compile's famous Puyo Puyo, created to suit the American/European public, including characters and other personalities from the famous Sonic the Hedgehog TV series. Apart from that it is the same Puyo Puyo game, as seen in Japan. This game is also available as a separate cart.
For convenience, it might be interesting to have in a games library, but it you already have the single releases, don't bother yourself with this one.
This is the European version of the cart named Sonic Classics.