The Switch platform has been added. The Switch version is valid for all of the "All Four" categories. It is not permitted for "All Five" at this time.
You must use the built in "reset game" feature when switching between games. You cannot use any savestate or rewind functions during your run. Not even to switch games.
You may play the games in any order you wish for the "All Four" categories.
As a reminder, runs start when you press start on the title screen of the first game (1P/2P Select for SMB1/SMB3, SMB2 title screen and Mario/Luigi Select for SMB2J (Lost Levels)). Runs and segments end on touching the axe for SMB1 and SMB2J and entering the final door for SMB2USA and SMB3.
Switch version is permitted for the "J Timing" categories ONLY if you have Super Mario Collection (the Japanese version of All-Stars) and those categories have a significantly different set of rules, so please review them if you intend on running those categories.