I tried programmer mode, it's so nice!! Imagine if there was intellisense and autocompletion XD. A nice touch to the game would be to be able to drag the instructions to move them, rather than to click on an arrow. Also for programmer mode if you can do it, then when you create the left parenthesis, the right one gets autocompleted like in most code editors. Thats just a preference form a programmer's perspective :).
And is it your fist game?