WndGame.java contains the logic for the Test Your Luck button in the menu. (Lines 130 - 136)
Game.java contains the SaturnUp initialization method, method to show an Ad, and the logic of whether an answer is correct or not to reward player. (Lines 128 - 160)
Hero.java contains the methods to earn gold, exp, or health. Still working on methods to earn weapons, or unlock characters. (Lines 1024 - 1073)