First, the good news: Puppeteer and Stick it to the Man!, two of the better games featured in the May lineup for European PlayStation Plus members, will also be offered next month to those of us in the US. A good start. Then we've got Skullgirls Encore which, again, cool.
Limbo is next, and I quite like Limbo, but talk about a game many of us have played already. Finally, the Instant Game Collection will add Surge Deluxe, a matching puzzle game for PS Vita, and a bit of sports with Pro Evolution Soccer 2014. Good for fans of that series, I suppose.
Sorry, Muramasa -- your time hasn't come yet.
Preview May's Instant Game Collection [PlayStation Blog]