Cool little game. It was quite fun to collect wisps but strange that blue ones can move while red ones cannot. Very short. I got to horse's grave very quickly and then... nothing. Game end. Would be good see some animations/cutscene/explanation of what happened after. How the horseman and horse lived happily forever after. Or maybe some tragedy happened. You never know.
Lacks fullscreen mode. I loved that controls are stated in the game though.
Very short, but if added more content, might be a real cool little game.