ARMS Institute is an independent wiki on the 2017 video game ARMS by Nintendo. It was originally founded on Miraheze on May 5, 2017 by Gomtuu, but within the next month had moved to a independent domain. It joined NIWA not long after the move on June 22, 2017, becoming the 24th member.
The wiki covers information on fighters in ARMS, stages, and the different types of ARMS that can be obtained in the game. The site also has partial information on the Super Smash Bros. series with the addition of Min Min in Super Smash Bros. Ultimate.