The Tetris 99 18th MAXIMUS CUP event runs from 11 p.m. PT on December 3rd to 10:59 p.m. PT on December 7th. To participate, Nintendo Switch Online members just need to play the Tetris 99 online mode during the event period. Players will earn event points based on their placement in each match. Once players have accumulated a total of 100 event points, a new theme will unlock, featuring background art, music and Tetrimino designs inspired by Super Mario All-Stars. In Super Mario All-Stars, which originally launched on the Super NES system, you can play upgraded versions of the Super Mario Bros., Super Mario Bros.: The Lost Levels, Super Mario Bros. 2, and Super Mario Bros. 3 games, all with enhanced 16-bit graphics and sound. Super Mario All-Stars is available as part of the classic game libraries included with a Nintendo Switch Online membership.