Flatworm Fever is the 16th secret achievement in the game, and the 1st secret achievement that requires 
Logits.
Description[]
"Thought the Flatworm Rave couldn't get any cooler? It appears you're on the afterparty list, complete with a disco ball and sick beats."
Obtaining[]
Purchase the Dancing Flatworm for 25 Logits in the Augmentations Console and enable it. Then, click on the now multicolored flatworm several times. A disco ball will drop and Edm'd will play.
Trivia[]
- The icon of this achievement is an underwater party, with three flatworms and a disco ball.