After a first successful port of Ninja Gaiden on PS Vita, it is no surprise to see the arrival of NNinja Gaiden Sigma 2 Plus this week. Technically though, it is a bit of a disappointment this time, with framerate issues and poor in-game graphics overall. The game even tends to be very pixelated from time to time (when you leave the menu or when too many enemies or effects are on screen - as can be seen here), which is not particularly pretty even on a 5 inches screen. That being said, if you can go past the technical issues, it still remains a very good game in the genre, as challenging as you need it to be, especially in the hardest difficulty settings.