Hi Lulink!
Interesting mechanic! I thought the hints that were printed on the racetrack were a seamless and intuitive way of guiding the player towards a winning strategy. I found the gameplay challenging, but not impossible.
I think the biggest thing that would benefit this game would be music. I could picture an 8bit high-tempo racing song to go along with the gameplay. Maybe even have the speed of the music increase with speed of the rockets.
Great design!
Best,
Brandon from TheIndieDream