Lock's Quest - awesome castle defense online game. The clockworks are attacking! Use your turrets to knock out approaching clockwork enemies. Don't let them reach the source well before the day ends or the battle is lost. Use the Mouse to move the reticule to target enemies and click to fire. Hold Left Click and release when the charge ring is green to do more damage. Collect source by destroying enemies. At the end of each day, use source to repair walls and upgrade turrets.