Hello, everybody, since this is my first post, I would like to suggest a game, not only for Pewdie to play, but for you bros as well, called Karoshi 2.0, a fun platformer, created by Jesse Venbrux, in which the goal is to kill yourself in every stage, but it requires more outside-the-box thinking than ever. It has 50 levels, a speedrun of the first game, and a level editor.
Im going to leave a video of a let's play, so that you can see how the game is:



The game is free, and you can download this, a well as the other games, from the author's page: venbrux.com/karoshi.php

Have you tried Karoshi Factory, the one you need to cooperate and switch between multiple characters? It's shorter than the others, but quite challenging.

You mean the boss level?