This is really really cute! I love the mechanic of changing the speed and the charm of this game with the art style reminds me of things I've done in the past. I think the button for increasing speed being E makes it a little hard to run forward and adjust the propellers at the same time. Another random idea is to make a greater time depletion penalty for higher speeds, so that you're incentivized to use the slowest setting more often. Overall I love this idea and I found it enjoyable