4. Best: Downloadable Music
Since our musical tastes differ so drastically, music games are left in a bit of a pickle when trying to put together a set-list. For every hardcore metal-head who is into Slayer, there's another person in the background clamouring for a bit of Beiber. Enter downloadable content. Music game popularity may have dropped significantly in recent years due to oversaturation of the market, but at the time of its peak in popularity, expanding the games through the use of downloadable songs was a stroke of genius. This essentially opened up the games for a person to create their own personal favourite set-lists. Rockband in particular was the biggest user of this model - by the end of its life Rockband has thousands upon thousands of songs to download and jam to with your plastic instruments. Sure, they cost money. But when it's just around the price of buying a standard music track and you get to feel like you're playing it yourself, what's the harm here? More recently this model continues to be used in the excellent Ubisoft game Rocksmith, which actually teaches you to play real guitar.