Octalien by far but truth is I had a blast working on all the games, this Jam has been such a pleasure!
Viewing post in Favorite Game You Worked On?
ooo that's a really tough one. I think they're all really cool but my personal favorite was this one: https://itch.io/jam/day-6/rate/2196302.
I think they did the best with mood and Bob the fish. Also if you are good at/like doing visual stuff, that version of the game still has plenty of areas for improvement. I did the tileset and coin sprites on day 4 but my combined lack of implementing Bob and having no art skills didn't make for the artistic integrity that I think the game deserves.
That is just my personal opinion and all the other versions were very cool too :)
EDIT: I just checked and that version doesn't have the source code uploaded. I asked them to update the page though so maybe it will be soon.