Multiplayer tower defense games for PC/Windows with local/couch support

Traveler's Bastion

Players: 2 local, 0 online

Rock of Ages 2: Bigger & Boulder

Players: 2 local, 0 online

Monster Outbreak

Players: 2 local, 4 online

TailQuest Defense

Players: 2 local, 0 online

Scrapshoot

Players: 2 local, 0 online

Lesson Learned

Players: 4 local, 0 online

Blitz in the Paper Kingdom

Players: 4 local, 0 online

Rhythm Towers

Players: 2 local, 2 online

ChronoDojo

Players: 2 local, 0 online

Tavernacle!

Players: 4 local, 4 online

CyberTD

Players: 2 local, 2 online

ZaciSa: Defense of the Crayon Dimension!

Players: 4 local, 0 online

Call of Toys: Tower Defense!

Players: 4 local, 0 online

Castle Doombad

Players: 2 local, 0 online

Keep Keepers

Players: 4 local, 4 online

Lesson Learned: Cult of the Elizabeth

Players: 4 local, 0 online

Cats on Duty

Players: 2 local, 0 online

Mob Control

Players: 2 local, 0 online

Cats on Duty: Prologue

Players: 2 local, 0 online

ExtracTD

Players: 4 local, 4 online