I tested alone, I'll probably try it again with someone else to play.But PLEASE don't lock the update of the game to the refresh rate of the screen.On my 144Hz screen, the game was more than 2x quicker than it's supposed to be :(
Yes, I noticed that screens having a refresh rate higher than 60Hz make the game faster.
There appears to be a bug in the graphics library I'm using. I'm sry about that and will look into this.
Keep an eye out for changes to https://github.com/bernhardfritz/piksel
Neat :) I did not know this lib