Back in August I worked to help create a Jam Entry to the Horror Summer Slow Jam from PigSquad
The submission I worked was called Jeben Dystonia. You play as someone who wakes up in a room and needs to get out before the creatures prowling outside do so first.
The major things I did to help make the game was setting up menus, dialog writing, and level design. However I also did some work creating small flashbacks that the player has while playing the game. These are shown in gray scale and are a bit transparent. However they were originally designed in color without the transparency.
I would suggest you try the game first if you want to remain spoiler free but bellow are the "finalized" versions of the drawings and the primary drawings. I was trying to emulate the more blocky design of propaganda posters and used a flat brush to make the drawings shown.