If you've yet to see Nidhogg in action - and you should - the game challenges two pixelated opponents to best each other with blades as they attempt to scroll from one side to the other. Sounds simple but it's a tense, terse affair of two-player swashbuckling, which for extra intensity can be opened up for up to eight players in take-it-in-turns tournaments.
The new PSN version supports both local and online multiplayer, and that can take place between PS4 and Vita players. Also, two players can duke it out on a single Vita, with the left stick controlling one fencer and the right stick the other. So if this week you see two people hunched around a Vita frantically screaming at one another, that's why. Hopefully.