Developers

Developers are people who have added a game or a "tool" to Kongregate. For example, tools as games would be Badge Master and Avatar Creator, when games are something that you play for fun.

Developers
Developers get a white D in blue background (seen right), which shows he/she has created a game. The person's games can be accessed from his/her profile. Developers can also implement a Kongregate API for his/her games, enabling Kongregate to put High Scores and Badges to the game. Without a Kong API, it's impossible.

There also are certain "Developers" who post a game which actually isn't a true game, but rather one level of something. Some games are meant to be such, though, but some just aren't, such as StencylWorks's Crash Course level which is meant to be a tutorial for Stencyl, has been uploaded to Kong, giving the person a D.