I had a dream where I was playing a game. The first stage was a fairly basic platformer, you had a decent range melee attack and exploded if you took too much damage. But the next stage was different. The enemies all were those kind of creepily overly cheerful-looking and there was constant giggling and voices in the background. Upon taking damage, instead of health decreasing or something, the game just started distorting - the point of view would tilt slightly, the music would slow down and the voices would get lower and more distorted, your player character's sprite would start deforming. It was fucking weird.