So for me this game has many things to work in. First of all, the presentation could be worked with a menu page showing the options to play, credits and mainly instructions, since i only managed to find out that I could turn to other side instead of always going to left.
Gameplaywise, it's more a personal opinion but in such a simple game that time counts for the leaderboard, depending of luck to the numbers spawn are kinda annoying, so I think some setting of making a following number spawn right after the one i managed to obtain is important.
Overall, it's a funny game to enjoy the time and chill. Great job.