However, the most important aspect that differentiated it from its arcade counterpart was the addition of "areas". "Wonder Boy" for the Master System and Game Gear had nine areas; this included all seven areas from the arcade original + two new areas created specifically for this version. The new areas featured unique level designs different than the rest of the game. These two areas were dubbed as the fourth area and eighth area in the game. This resulted in a modification on the numbering for the areas lifted from the arcade original (for example, what was the fourth area on the arcade version became the fifth area on the SMS/GG version).