The forthcoming videogame is being developed by a European two-man team who go by the, erm, ever-so-welcoming '' moniker. Made up of Maurice Guegan and Saso Smolej, the duo has a number of projects in the pipeline and has already released one free game, which is .

Their upcoming brings together 1985's Super Mario Bros with 2007's Portal, and will seem familiar at first glance. As the game starts, the clouds and bushes of the Mushroom Kingdom roll past, but look a little closer and you will see that Nintendo's mascot is carrying a Portal gun. .

The final game will feature a multiplayer mode, unique Portal-like puzzles, and additional map packs. The developers detailed that, when complete, MariO will be released completely free of charge and as open-source software for Windows, Mac and Linux machines--, that is.

A solid release date for the to-be-free game is yet to be pencilled in, however the Stabyourself team said it should be ready within the coming months.

[Via ]