There is always a distinct abundance of "trippy" games in these competitions. This list has "Track not found?!", "FourFold", "I want to Google the Game", and my favorite "CHOCH". I think it has to do with lack of resources pushing people to abstractions, but people more knowledgeable about these things can comment on that. There is a distinct lack of trippy games in the main stream, I am not a gamer but whenever I come across these small games I always wonder how it will feel like if this was a full fledged game. The last one I remember is perhaps Braid with its time travel (again, not a gamer, very out dated info) but its graphics are very normal.