The battle royale genre comes in all shapes and sizes - it might have been made popular by shooters like PUBG and Fortnite, but Tetris 99 showed that it can also be successful in completely unexpected ways.
Reinforcing that point with style is 'Mario Royale', a fan-made, free-to-play online game which has multiple players all playing one level at the same time. Roughly 75 players jump into one game and take on a randomly selected level from Super Mario Bros. together; the first one to the flag pole wins, but getting there is quite the challenge.
We've had a few goes ourselves and it's pretty fun; players will likely zoom ahead and stomp on all of the Koopas and Goombas before they even trouble you, but we had one occasion where someone grabbed a Super Star, turned around, and used it to wipe out half of the other players following them. It's pretty mad, but that's what you'd hope for from Mario Battle Royale, right?
You can give it a go yourself right here if you're interested, but you might want to be pretty quick. We've seen Nintendo take down multiple fan projects like this in the past and - rather humorously - the loading screen for the game features a message from its creator which reads, "Please don't sue me. Please."
If you do decide to give it a go, let us know what you thought in the comments below.