Oh yeah I got that I am not controlling Tim directly! That's the thing, I push buttons but I can't see anything happen on the screen at all - the selector appears to not be moving, battery doesn't recharge, things don't upgrade/mine... maybe they are and I just don't know how. I guess what I'm saying is, some kind of visual feedback to what's happening is nice - even just a box blinking red if I am not allowed to perform an action, I guess? Dunno!
NEVERMIND! Something was wrong, I reloaded the game today and suddenly I was able to see the blinking cursor moving around as I push arrow keys!