Swarm Swatter

Defend your central tower from the incoming endless, constant swarm. Click inside the inner circle to build towers. Choose what tower or upgrade to use with the number keys 1-5, click on a tower to upgrade it. But over time the swarm grows, and you are doomed to lose. Can you last more than 982 seconds (my PB)?

Tower defense without paths. Inspired by the GMTK 2018 jam theme, but made well after the deadline. Made in a weekend but I might keep updating it.