I tried last month to use my Super Multitap with games like NHL 96 and NHL 97 to try 4 or 5 player action, but it didn't seem to work. Only 2 player would show up on the team select menu so I thought it was just a myth made by the internet so I gave up.
However, I recently stumbled upon this video that shows some 4-player footage at 2:57.
Did more youtube research and found this one that clearly shows that 5 player is possible. Did more research and found that NHL 94 is the only one with 5-player support, following years had 4-player max.
But still I don't know why I couldn't activate it, is there a special procedure to get it to work?