Defender

Defender game information:

Defender is a game of tactics, strategy and decision-making. Each level is consist of waves of enemies wherein you must prevent them from reaching the exit points. Each enemy kill is rewarded with points to purchase your defenders to be placed on pavements, or make a new pavement.

How to play:

Mouse - To interact.
Spacebar - Cancel current bid order.
Shift - Hold down to place multiple defenders of the same type.