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.
Let's turn back time to enjoy a game which become a legend of Nitendo, one of the famous game of every 8x and 9x's generation - Contra. And now, it's back in flash so you don't have to find it anymore. Have fun!