Sonic Jam
"Sonic Jam" is a compilation which contains the four main "Sonic the Hedgehog" games released on the Sega Genesis: "Sonic the Hedgehog", "Sonic the Hedgehog 2", "Sonic the Hedgehog 3", and "Sonic & Knuckles". Unlike future "Sonic" collections, "Sonic Jam" does not use a Genesis emulator; the games are proper ports, and all are nearly identical to the original Sega Genesis releases, with the exception of minor bug fixes. "Sonic Jam" emulates "Sonic & Knuckles" "lock-on technology"—a special feature that allows the player to merge elements of "Sonic & Knuckles" into previous games, resulting in changes to the level design as well as the choice to play as Knuckles the Echidna in "Sonic the Hedgehog 2" and Tails in "Sonic & Knuckles".
Sega Saturn
Like the Genesis, the Saturn had an Internet-based gaming service. The Sega NetLink was a 28.8k modem that fit into the cartridge slot in the Saturn for direct dial multiplayer. In Japan, a now defunct pay-to-play service was used. It could also be used for web browsing, sending email, and online chat. Because the NetLink was released before the Saturn keyboard, Sega produced a series of CDs containing hundreds of website addresses so that Saturn owners could browse with the joypad. The NetLink functioned with five games: "Daytona USA", "Duke Nukem 3D", "Saturn Bomberman", "Sega Rally", and "". In 1995 Sega announced it was developing a variant of the Saturn featuring a built-in NetLink modem under the code name "Sega Pluto", but it was never released.