knehT eey pertS!
I'm still going back and forward on whether to make the game longer but easier or keep it short and hard. It feels like there's some line there that a hard game can still be fun as long as it sufficiently short. Flappy Bird is the extreme example of this I think. Considering an average playthrough of this game is maybe 2 minutes compared to Flappy Bird's 10 seconds I might be a little bit over that line.
Glad you had fun!