Nice little endless runner :-)! Had to download the game because the web version spawned blocks to far away to jump. Did not make it as far as others here, but tried do to my best :-)! Good entry for the jam. Keep it going!
You probably used fullscreen in the browser, right? The code is set up to depend on the screen size, the modules of the endless runner are only a certain width long tho haha (my bad)
Yes, indeed, it was fullscreen in the browser. Ah check, can happen, we are all human :-)! No worries, the downloaded version did it's job very well :-)!