Dude?
How do you change which option you want to upgrade?
I tried holding down shift to select which one I wanted, but it always picked speed whenever I did. I tried Ctrl instead but it didn't do anything. Tried holding down Ctrl and pushing arrow keys but it didn't work. Tried maxing out one upgrade to see if it automatically moved onto the next... but after I maxed speed, my other upgrades disappeared.
Fix that. I'm not sure about the not being able to select new upgrades, as I might have gotten the syntax wrong, but when one selection is maxed it should automatically move up to the next one instead of wasting the upgrade.
Not a bad game though! Like previous poster said, nothing new. But not bad.