One of the most beloved video games in history has been refreshed in a new mashup that gaming fans of all shapes and sizes need to download immediately. The title is “Mari0″ and simply stated, it’s Super Mario Brothers meets Portal.¬†Game developer¬†Maurice Guegan is the man behind Mari0, and he built the title from the ground up. It features a start to finish recreation of Nintendo’s original Super Mario Brothers game, adds a portal gun that shoots portals through which Mario can travel as in the popular PC game “Portal,” and mixes in a 4-player cooperative mode along with several additional features. The result is an addictive game that does a better job adding a new twist to an old classic than anything we’ve seen in recent history. Mari0 is free and open source, and it is available immediately for Windows, OS X and Linux PCs. A trailer video follows below, as does a link to a download that will ensure your Monday is completely unproductive.