Chapter 9 Reverse engineering various ROM images
The follow section will be comprised of a basic and in some cases more advanced teardown of a selection of ROMs both random and handpicked to demonstrate certain traits. Although the distinction between genres is not brilliant from an artistic standpoint it is somewhat useful from a technical standpoint. This being said some of the best titles on any system or indeed examples of said genre might well feature elements of other “genres” with one of the most popular options here known as adding RPG elements where what were traditionally stateless (ignoring the odd one use powerup carry over and lives) games level to level gained a small measure of character progression (experience and upgrades being the main methods) becoming a commonly seen term used in discussion of games.
All that and what follows being said play the game, look at some game footage and if you can simply play around with layers in an emulator as that will give you clues as to how things will be set up in the game.