

Electronic Arts 4 Way Play
Released: 1st of September 1993
The 4 Way Play is an accessory created by Electronic Arts for the Sega Mega Drive. It allows for up to four players to play together in certain games. Largely, mostly games designed by EA itself supported it. When first released, Sega's official Team Player multi-player adaptor was not compatible with 4 Way Play games. Later releases fixed this incompatibility issue.
The device itself plugs directly into the system and has no wires sticking out and attaches to the front of the system like an extension. To attach like this it plugs into both controller ports. Due to the way it is plugged into the system it is incompatible with devices such as the Sega Multi-Mega and X'eye.
Compatible Games
- Australian Rugby League (1994)
- Barkley: Shut Up and Jam 2 (1995)
- Bill Walsh College Football (1993)
- Bill Walsh College Football 95 (1994)
- Coach K College Basketball (1995)
- College Football USA 96 (1995)
- College Football USA 97 (1996)
- Dino Dini's Soccer (1994)
- Elitserien 95 (1994)
- Elitserien 96 (1995)
- FIFA Road to World Cup 98 (1997)
- FIFA International Soccer (1993)
- FIFA Soccer 95 (1994)
- FIFA Soccer 96 (1995)
- FIFA Soccer 97 (1996)
- Gauntlet IV (1993)
- General Chaos (1994)
- IMG International Tour Tennis (1994)
- Madden NFL '94 (1993)
- Madden NFL '95 (1994)
- Madden NFL 96 (1995)
- Madden NFL 97 (1996)
- Madden NFL 98 (1997)
- Mega Bomberman (1994)
- MLBPA Baseball (1994)
- Mutant League Hockey (1994)
- NBA Live 95 (1994)
- NBA Live 96 (1995)
- NBA Live 97 (1996)
- NBA Showdown (1994)
- NHL '94 (1993)
- NHL 95 (1994)
- NHL 96 (1995)
- NHL 97 (1996)
- NHL 98 (1997)
- PGA European Tour (1994)
- PGA Tour Golf III (1994)
- Rugby World Cup 95 (1994)
- Street Racer (1995)
- Triple Play 96 (1995)
- Wayne Gretzky and the NHLPA All-Stars (1995)
- World Class Leader Board (1992)
16 games are compatible with the Electronic Arts 4 Way Play

SEGA Mega Drive Multiplayer
Released: 1st of January 1993
Variations
The original model of the Team Player (MK-1654) and its international equivalents use a single connector cable, leaving an additional port on the console free for a fifth player. Alternatively, the second port could house a further Team Player, for up to 8 simultaneous players. When not in "MULTI" mode, the Team Player's switch can be used to specify which controller is mapped to the Mega Drive's first controller port, so that the player is able to switch between control pads and the Sega Mouse without detaching or connecting controllers. This original version competed directly with Electronic Arts's 4 Way Play for support, with many of that publisher's titles supporting only their adapter, while other publishers preferred Sega's device.
To resolve this split in the platform's user base, Sega released a second Team Player model (MK-1647) which features two connector cables and support for EA's previously "exclusive" games. To use the "EXTRA" mode which supports these titles, both connectors must be plugged into the Mega Drive's controller ports, while Team Player-compatible titles still need only one connector inserted, as in the original model. The improved software compatibility and the use of cables rather than connectors molded directly into the adapter put the MK-1647 at an advantage over the 4 Way Play, which required both controller ports to be the same distance apart (thus preventing it from working with the CDX or X'eye).
Compatible games
- Note: The titles listed below are directly compatible with the Team Player in "MULTI" mode. 4 Way Play games are also compatible with the second revision's "EXTRA" mode.
Mega Drive
- ATP Tour Championship Tennis
- Barkley Shut Up and Jam 2
- College Football's National Championship
- College Football's National Championship II
- College Slam
- Columns III: Revenge of Columns
- Dragon: The Bruce Lee Story
- ESPN National Hockey Night
- FIFA International Soccer
- Fever Pitch Soccer
- Gauntlet IV
- Madden NFL '94
- Mega Bomberman
- Micro Machines 2: Turbo Tournament
- NBA Action '94
- NBA Action '95 Starring David Robinson
- NBA Hang Time
- NBA Jam
- NBA Jam Tournament Edition
- NBA Showdown '94
- NCAA Final Four Basketball
- NFL '95
- NFL 98
- NFL Quarterback Club
- NFL Quarterback Club 96
- Pepenga Pengo
- Puzzle & Action: Ichidant-R
- Puzzle & Action: Tant-R
- Street Racer
- The Lost Vikings
- Tiny Toon Adventures: ACME All-Stars
- Ultimate Soccer
- Unnecessary Roughness '95
- WWF Raw
- Wayne Gretzky and the NHLPA All-Stars
- World Championship Soccer II
- World Cup USA 94
- Worms
- Yuu Yuu Hakusho: Makyou Toitsusen
Mega-CD
- Dungeon Explorer
- ESPN NBA Hangtime '95
- ESPN National Hockey Night
- NBA Jam
- World Cup USA 94
32X
- Golf Magazine: 36 Great Holes Starring Fred Couples
- NBA Jam Tournament Edition
- NFL Quarterback Club
- WWF Raw