This game is using Flash! After the 31st of July 2019, your internet browser might start blocking Flash, especially if you use Google Chrome. This means you'll have to activate it to play this game.
In Run Mario 3, Mario's mission is to run constantly and constantly and run as far as possible. On the way there will be many items to collect such as gold coins, mushrooms ... besides, you will also face deadly obstacles like fire, lava pits ... So, be careful!