I really liked this one but maybe that's because I'm a sucker for time based games. (good gameplay, background and trees in background looked really good, controls were easy to understand)
Some nice polish I would have liked would be having different presses of the space bar have different jump heights, maybe I way to control the player's x direction just a little as it's frustrating missing the platform, and also just clicking R at any point to restart in case I had a bad run.