Sorry, some Mac browsers have issues with Shift. Try the alternate keys 'Z' or '/' to run. You can also use Tab, Backslash, or the middle mouse button as alternatives to Alt/Ctrl if you need them.
If you get over 100,000 and don't want to wait until the score reaches the infinite cosmos of the infinity, just press "s" and wait for a few seconds. Then everything will stop. Then press "menu."
Sorry, some Mac browsers have issues with Shift. Try the alternate keys 'Z' or '/' to run. You can also use Tab, Backslash, or the middle mouse button as alternatives to Alt/Ctrl if you need them.