Personally i prefer 1 but 3 is considered the best by many.Ĥ is a weird case, it wasn't developed by SNK and it took out a lot of things introduced in 3. It ads different paths, longer stages and maybe the best final stage in the whole series. One of the best in the series and still pretty 'easy'.ģ is where the difficulty and 'cheapness' really start IMHO. X is the remake of 2, some stages change, there are new weapons, no major slowdowns etc. Still a great game that you can learn and try to go for hi scores.Ģ has a lot of technical problems, while it's not the same as X when it comes to stage layouts, enemies and weapons placement its worth playing just for loyalty or curiosity.
1 is an arcade classic, feels like a war with no supernatural stuff just machines.