Thank you so much, we’re happy to hear that! We originally wanted to do a bonus system to add seconds to the run, but shifted to the upgrade system to stay within the 12 seconds. 😃
Interesting concept and I like that you can manually calculate and estimate on the map itself. I'm not sure if it's just my browser, but I ran into a bug where the dialogue text is flickering on top.
Otherwise, I like the atmosphere and music as well! Definitely adds to the tone of the game.