Around the same time that Street Fighter 2 was launched for the Mega Drive, Sega came out with a 6-button controller and soon after a 6-button version of their Arcade stick. Only a small selection of games made full use of the extra buttons, but the ones that did are much more enjoyable with the extra 3 buttons. Fighting games in particular were able to expand beyond the limited 3 button scheme to compete properly with the SNES controllers. The 6-button controller also added a "mode" button which was used to trick the console into thinking it was a regular 3-button controller (for compatibility) except when playing 32X games where it was a fully functioning button. In addition to the list below, many Mega-CD games took advantage of the 6 button controller.

• 
  
  - Ballz *
  
  - Clay Fighter *
  
  - Comix Zone
  
  - Contra / Probotector (Limited 6 button functionality)
  
  - Davis Cup tennis/ Davis cup world tour
  
  - Dragon Ball Z
  
  - Eternal Champions
  
  - Fatal Fury 2
  
  - Fever Pitch Soccer
  
  - Lost Vikings
  
  - Midways Arcade greatest Hits (robotron only)
  
  - Mortal Kombat
  
  - Mortal Kombat 2
  
  - Mortal Kombat 3
  
  - Mortal Kombat Ultimate
  
  - Ranger X
  
  - Shaq Fu
  
  - Samurai Showdown
  
  - Street Fighter 2
  
  - Super Street Fighter 2
  
  - Streets of Rage 3
  
  - Technoclash
  
  - Zombies ate my neighbours
  

* unconfirmed

Controller images are from the now defunct vidgame.net. Many thanks to the DP forums and Perfect Conversion contributers for the assistance. If you know of a 6-button game, or can verify a game please email me: smi04(at)yahoo.com