Syobon Action/Cat Mario is a Japanese game made in 2007 created by Chiku, the game is a parody of the original Super Mario Bros. game and stars Cat Mario. He must go through all the platforms without touching items that can either kill the character or do nothing at all, the enemies, and the scenery that turns out to actually be obstacles, the game has several fanmade sequels and a lot of fan art. The game can be played online or it can be downloaded.
Due to Syobon Action being very difficult, it has became notorious since it causes extreme frustration. It has received a lot of let's play videos, mostly where the players get furious at the game when they die.