Drag Normal Pokemon into Top, Right, Bottom, or Left slots of the circle to occupy that slot. Place Shadow Pokemon in the middle (Sprites will snap to proper position if they are touching it). When the Shadow Pokemon in the center has a zero or negative Shadow Gauge, click on it to Purify! Place excess Normal Pokemon above the Release button (Sprites will snap here too when touching the right spot) and then click release to set them free and earn Money. Buy Pokeballs by clicking the + sign under them. Some Pokemon are harder to catch and will need a better ball. Click Shadow Search to make a Shadow Pokemon appear, then click on a Pokeball under it to capture. Experiment with the placement of Normal Pokemon on the circle to Purify faster!