Simon Says Mode

Simon Says Mode is a feature in Just Dance 3 and Just Dance Greatest Hits and did not appear any of the sequels.

How it works
You first need to dance for it, as it is the first unlockable. You must accumulate 15 stars to unlock this feature. Then, go to the "Unlockables" section at the top right-corner of the screen. You will see that Simon Says Mode is there, and simply select it to start playing. You will usually find yourself dancing to a solo song.

Gameplay
If it is the first time you are playing in Simon Says Mode, you will see a pop-up on how it works. There are 4 types of Simon Says Mode movements:

Clap
Simply clap your hands; if you do a good job, you will get 200 points. Otherwise, you get 0 points.

Stop
Simply cease motion; you will get 500 points if you don't move. However every time you move during Stop, 10 points will be deducted. When this move ends, the screen will tell you how many times you moved and it will deduct points according.

Spin
Simply spin. Perform well and you will be rewarded with 1000 points. Otherwise, you get 0 points.

Shake
Shake as vigorously as you can. If you are using a Wii-mote, simply shake it as hard as you can. (How many points do you get?)