Mari0, the Super Mario Bros./Portal platformer crossover, has been ruining friendships from a few couch cushions away since launching last month, but now its scope for poisoning even the truest of bffs is broadening. Developer Stab Yourself is working on an online multiplayer mode for Mari0, with a brief taste of the inevitable frustration, angry words, broken screens and even more irreparable relationships to come in the demo video above.

No word yet on an expected release date or details, but the video shows six whole friendships come to a grinding, chiptuned halt -- that's six players and 12 possible portals, folks. We hope you meet new people easily.