This week end I participated in the Game Dev Party, a 32 hours Jam in Lyon (my town). The theme was : "Little Pea, big weights" (Pea and Weight being both pronounced the same in French). We decided to do a puzzle game based on the three 3d Axis (X,Y,Z) and gravity. This is what we have done in 32 hours (The Game is made in Unreal 4 and Oculus Rift compatible) :
Do you think it would be worse making it a complete game ? Many of us are seriously thinking about doing a crowd-founding campaign if more people like the idea.
It's not got me jumping up and down desperate to play it, but games like portal never took my fancy either - didn't stop the game selling millions though.