Dario Battle · 
Dario Battle is a web application which allow to play to a battle mode like the one that was in the game Super Mario Bros 2.
Demo
Current version of Dario Battle :
https://dariobattle.herokuapp.com
The game is not yet implemented on the new version.
OR
The old one, developed at school by Sébastien POIROT & Maxime SARRATO and tutored by Luca De Feo during the AWS course. https://dariobattleapp.herokuapp.com