Games like Fieldrunners
Games like Fieldrunners include Bloons TD 6, Plants vs. Zombies GOTY Edition, Kingdom Rush - Tower Defense, Kingdom Rush Frontiers - Tower Defense, and Rock 'N' Roll Defense. We matched them by the tags players give Fieldrunners on Steam (Tower Defense, Strategy, Indie, Casual, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Tower Defense · Strategy · Singleplayer

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · Casual

Kingdom Rush - Tower Defense
Shared: Tower Defense · Strategy · Singleplayer

Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · Strategy · Singleplayer

Rock 'N' Roll Defense
Shared: Tower Defense · Strategy · Casual

Plague Inc: Evolved
Shared: Strategy · Indie · Singleplayer

Game Dev Tycoon
Shared: Indie · Strategy · Casual

Defense Grid: The Awakening
Shared: Tower Defense · Strategy · Indie

Kingdom Rush Origins - Tower Defense
Shared: Tower Defense · Strategy · Singleplayer

Bloons TD 5
Shared: Tower Defense · Strategy · Casual

Mini Motorways
Shared: Strategy · Casual · Indie

Kingdom Rush 5: Alliance TD
Shared: Tower Defense · Strategy · Singleplayer

Mini Metro
Shared: Strategy · Indie · Singleplayer

Creeper World 3: Arc Eternal
Shared: Tower Defense · Strategy · Indie

GemCraft - Chasing Shadows
Shared: Tower Defense · Strategy · Indie

911 Operator
Shared: Strategy · Indie · Singleplayer

Rogue Tower
Shared: Tower Defense · Strategy · Casual

Warstone TD
Shared: Tower Defense · Strategy · Indie

Battle Ranch: Pigs vs Plants
Shared: Strategy · Indie · Tower Defense

Bardbarian
Shared: Tower Defense · Indie · Strategy

Orcs Must Die!
Shared: Tower Defense · Strategy · Indie

Hexcells
Shared: Indie · Casual · Strategy

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Singleplayer

Fieldrunners 2
Shared: Tower Defense · Strategy · Casual