Welcome to the html5 game circle td. Use the keys stated in the top left to place towers where your mouse is. Hover over a tower and press w to sell it. Press q to change the mode. The mode affects the spawning speed and the sell price. Hovering over enemies and towers shows stats. Can you get to round 20?

Towers

plain tower - it's normal

magic tower - penetrates armour

speed tower - effective against low armour enemies

ranger tower - shoots far

pierce tower - can shoot through muiltiple enemies

generator tower - slowly generates cash

mega tower - is cool