When a player earns all the badges in Just Dance 3, they will be rewarded with a special achievement or reward. The reward may vary depending on the version of the game and the platform it is played on. In some cases, players may receive a certificate or a virtual trophy, while in others, they may unlock special content or bonus features within the game.
Additionally, earning all the badges in Just Dance 3 can be a source of pride and accomplishment for players. It demonstrates their dedication and skill in mastering the game's choreography and challenges. It also encourages players to continue playing the game and exploring its various features and modes, as they strive to achieve this goal.