http://www.pcgamer.com/legion-td-2-launch-trailer-showcases-competitive-team-based-tower-defense-action/

Legion TD is a very popular mod for Warcraft 3 that also happens to be very old, having originally been released in 2009. Which is why the people behind it went to Kickstarter last year to seek support for the creation of a standalone sequel, Legion TD 2. They got the money—more than $66,000—and on November 20, you'll get the game. 

Legion TD 2 is a multiplayer tower defense game in which two teams of four players each defend opposite sides of a symmetrical map against hordes of AI attackers. Whichever side holds out the longest, wins—a simple concept that's obviously not so simply in execution. Instead of placing towers as in a conventional tower defense game, you'll deploy soldiers who will automatically move, attack, cast spells, and otherwise do their best to fight off the attacking enemies.