DHGF: Ninja Gaiden Sigma 2 Plus is a solid enough port of the console game if you’ve missed it or really want a portable version, but between losing features and technical issues, it’s hard to recommend unless you’re a diehard fan or have no other way to play it. The story of the game is still fine even if it’s borrowing a bit from the NES Ninja Gaiden, the game is as artistically interesting as ever, and the audio is overall mostly on par with its console counterparts. The controls have migrated to the Vita well enough to make destroying enemies as fun as ever, and the toys you’re given to do so are also as diverse and useful as before. The changes made in Sigma mostly remain intact, which rebalances some of the stages well and makes the game easier to get into, and the Plus additions, like Hero difficulty and Ninja Race, add more variety to the game and open the experience up to new players well. That said, the frame rate suffers when large groups of enemies are on-screen, the Japanese language track has been purged from this release entirely, and the co-op options from the PS3 version have been excised as well. Also, the game shows fairly obvious loading times even when installed to the memory stick, many of the balancing and camera issues from the original game are still here, and the AI partner in Tag Missions isn’t generally bright, which makes things harder than they need to be. If you really want a portable version of Ninja Gaiden II, Sigma 2 Plus does a fine enough job of being this thing, but it’s not really worth the investment if you own either or both of the prior releases, as it adds too little and loses too much to the experience to be worth investing in otherwise.