Mojo

Mojo was first introduced in Just Dance 3, and has been in Just Dance 3, Just Dance 4, Just Dance 2014, & Just Dance 2015.

Just Dance 3
Mojo worked similar to Just Dance 4, and it depends how much stars you get and you will unlock alternates. Such as mashups, new songs, extremes, etc. The first thing you would unlock is Simon Says Mode. The last thing would be Hungarian Dance No. 5.

Just Dance 4
Just Dance 4 pretty much worked the same as Just Dance 3, but there were more alternates. You will see something in the right bottom corner that says "Mojo" your mojo will first be white with no yellow, and then again, it depends how much stars you get and your Mojo will turn more yellow. There were also alternates with items, and unlockable avatars.

Just Dance 2014
Mojo then started to work out differently. Instead you had to earn mojo by dancing, like in the past Just Dance games. Also, instead of waiting, you could unlock it any time, like Avatars. There were also prices for avatars, past Just Dance avatars coasted 5 mojo coins, Ubisoft game ones costed 50 mojo coins, while the unknown-disco ball dancer costed 500 mojo coins. There were also sweats mode, extreme mode, and other alternates. Also, when you get a DLC, you will get two or one exclusive avatars. Timber, Die Young, and Gangnam Style, had two exclusive avatars. There were also monthly mashups and avatars.

Just Dance 2015
Mojo pretty much worked the same as Just Dance 2014, but there were no monthly mashups, and very few avatars when you buy DLCS. But Duet mashups did return.

Trivia

 * You're On My Mind has a dance crew mashup.
 * Mojo seems to work out differently in all games.
 * In all games, you can get unlockables by mojo.
 * Just Dance 2014 has the most unlockables.
 * Many different mojo coins were in Just Dance 2014, making apperances as Beta.