I participated in the 'Game Dev Week' of my university in 2017, where programmers and artists came together for a week to develope a full game in a week, like a stretched out game jam with focus on more proper organisation and documentation.
We developed the stealth game 'Ninja Elephant' , where you have to infiltrate a heavily guarded museum and steal the Jade Peanut, for the honour of your family!
I created most of the environment assets and their functionality, and worked as a communicator between the programmers and designers, so everything could fall into place more neatly. Was and still am super proud of this game, because it actually contains many features that represent a 'real' game to me, like sound design, title menu, multiple levels and an actual tutorial.