Sentry Guardian

Dense woods press against the kingdom's border. At that outpost in Sentry Guardian, a lone watchman stands between the forest and the clock tower after a messenger rides off with news of the invasion. Skeletons, warped wizards, Vikings, and other creatures pour out of the trees in wave attacks, leaving the guard to hold the line with his bow before the border post falls.

How to play?

Fire arrows into the advancing army before any creature reaches the tower, using the sentry's bow through one assault after another as the path fills with enemies. Between battles, collect the cash reward and spend it on stronger combat stats or spells that add extra damage during the next attack. When a wave ends, head into upgrades right away, since the next push arrives fast and the guard fights alone.