there have been many facsimiles of the 4 main classics that made up the nes snes and sega systems but they for the most part lost their charms in the more recent years... these 4 games that were "the founding fathers" so to say in my opinion would be mario, zelda, megaman, and sonic... and from these more games spawned but with more lacklustre... these would be games like aero the acrobat, geck, and ofcourse, crash bandicoot, i would have included earthworm but that game sort of belongs in its own classical category since it was a very good game and it wasnt really at all like its predecessors