Fieldrunners

Unlike in other tower defense games, turrets can be placed anywhere and the enemies will go around them, forcing them to walk along any path the player makes. It is not possible to block the path however. Fieldrunners offers three types of gameplay: Classic, Extended and Endless. Playing in Classic and Extended modes limits the number of rounds in which the player must defend to 100.

Classic only lets players build the original four towers, Gatling, Goo, Missile, and Tesla (except Skyway which substitutes Laser for Tesla and Frostbite which substitutes Ice for Goo). Extended mode adds the two new towers, Flame Tower and Mortar Tower (except Skyway which adds Tesla instead of Mortar). In Endless mode, the player may defend indefinitely. In any mode, the player may play in Easy, Medium, or Hard mode.

Fieldrunners has received generally positive reviews, with the PSP version scoring 81% at the review aggregate website Metacritic. IGN gave the game an eight out of ten rating, and highly recommended it. Select Star Media was highly critical of the PC port, but expressed enjoyment of the mobile releases.

Of the iPhone version, Stuart Dredge of Pocket Gamer noted its "clever controls and cartoony visuals", calling it "the best Tower Defense game on iPhone so far".