Play the hardest Mario game available online. I grant you an experience like you never had before. All traps are hidden inside this game so there is no way to escape. You will have to memorize all the places where danger lies in order to be able to play. There is a positive side though as you have unlimited lives to try and complete the levels. Have fun and try not to get angry on your keyboard.
How to play "Unfair Mario"
Arrow keys to move and jump. Space to retry.