After every punishing stage I finished in Oniken, I felt completely drained; my nerves shot. I would force myself to take a break, jumping into a less emotionally taxing game before heading back. That feeling clearly won’t be for everyone and the game’s over-the-top violence will definitely scare off some gamers. However, the personal satisfaction that comes from finishing each of the game’s stages cannot be overstated. Oniken: Unstoppable Edition is meant for a certain kind of NES fan; those that revel in that sort of old-school challenge will find little else like it on Switch.