A Youtuber named InternoPlus created a browser-based Super Mario Bros-themed Battle Royale gamed he named Mario Royale. The game has controller support.
In his video you can check out above, he speaks of the development of the game that took him a few weeks and the rules of the combat. Unless a player has the star, you can not directly interact with other players – but you still can snipe them with a perfect shell. Let your imagination run wild as you live to be the only Mario on this level. Or at least the one of the three.
The game is free-to-play and is available here.