Leave the game idle while on shield training and move your mouse off the screen a bit under the back arrow and you get some great shield stat boosts. Especially easy when you have turbo mode on.
Perhaps if you want to make the poop monger game a more activity-yeilds-rewards game you could make it a bit easier to collect those poops when they are flying around. Perhaps using an area-of-effect click option in whch you can upgrade the size of the area you collect when you click.
He is starting to learn the basics of Unity Player programming, so he is publishing his builds as he goes along until he learns how to make it take its form.