Use the cursor keys to move Merlin
Hold left mouse button to charge a spell
Point to where you want it to land
Release left button to fire
Power Potions
Red - increase maximum energy blast size
Blue - increase the speed at which the energy blast charges
Purple - increase the initial size of the energy blast
Green - increase Merlin's walk speed
Game Controls
"s" - Toggles in-game sound effects
" h" or ESC - Brings up in game help