Updated: Nov 11, 2020
"SHING!" is a PAX Online 2020 game that is being presented on PAX 2020 as a totally immersive Beat n' Up. Here, you play as one of the four ninjas and uses the right analog stick for attacks with swords, daggers, axes, and spears. The game is very fun in both the single-player and the coop mode, local and online, and with four players. The visuals are very cool and have some comic book influences, more like Jim Lee's Style (Wildcats).
If you search for a beat'n up or ninja games free, this demo is a good choice.
The demo of the game is on Steam, as well the full game. Check it out.