Do you enjoy playing games that require strategic thinking and planning? Defense strategy games are perfect for those who love to use their brains to outsmart their opponents. In this article, we will discuss the best online defense strategy games that you can play for free or at a low cost.

1. Kingdom Rush

Kingdom Rush is a tower defense game that has gained popularity for its challenging gameplay and impressive graphics. The objective of the game is to defend your kingdom against invading enemies by strategically placing towers and upgrading them. There are four different types of towers, each with its unique abilities and strengths. The game also allows you to control heroes who can fight alongside your towers.

2. Plants vs Zombies

Plants vs Zombies is a classic defense strategy game that has been around for over a decade. In this game, you must defend your home from zombies by planting different types of plants that have unique abilities. The game has several levels, and each level has its unique challenges and zombies to defeat.

3. Clash of Clans

Clash of Clans is a multiplayer strategy game where you must build and defend your village while attacking other players' villages. The game requires you to gather resources, build defenses, and train troops to defend your village. You can also join clans with other players to participate in clan wars and earn rewards.

4. Bloons TD 6

Bloons TD 6 is another tower defense game where you must defend against balloons that are trying to invade your territory. There are various towers to choose from, each with its unique abilities and strengths. The game also has several game modes, including co-op mode, where you can play with other players.

5. Defense Grid 2

Defense Grid 2 is a sci-fi themed tower defense game that offers challenging gameplay and impressive graphics. The game has several modes, including campaign mode, multiplayer mode, and challenge mode. There are over 20 different types of towers to choose from, each with its unique abilities and strengths.

6. Dungeon Defenders II

Dungeon Defenders II is a tower defense game with elements of RPG and action games. The game allows you to choose from different heroes, each with its unique abilities and strengths. You must defend against waves of enemies while upgrading your heroes and defenses. The game also has a multiplayer mode where you can play with other players.

7. Orcs Must Die! 2

Orcs Must Die! 2 is a tower defense game with elements of action games. The game allows you to choose from different heroes, each with its unique abilities and strengths. You must defend against waves of orcs while upgrading your heroes and defenses. The game also has a co-op mode where you can play with another player.

8. GemCraft - Chasing Shadows

GemCraft - Chasing Shadows is a tower defense game where you must defend against waves of monsters by using gems with unique abilities. The game has several levels, and each level has its unique challenges and monsters to defeat. You can also upgrade your gems and combine them to create more powerful gems.

9. Final Fantasy XIV

Final Fantasy XIV is an MMORPG that has elements of defense strategy games. The game allows you to choose from different classes, each with its unique abilities and strengths. You must defend against waves of enemies while upgrading your abilities and equipment. The game also has a multiplayer mode where you can play with other players.

10. Starcraft II

Starcraft II is a real-time strategy game where you must build and command armies to defeat your opponents. The game has three different races, each with its unique units and abilities. The game also has a multiplayer mode where you can play with other players.

In conclusion, these are the best online defense strategy games that you can play for free or at a low cost. These games offer challenging gameplay, impressive graphics, and hours of fun. So, what are you waiting for? Start playing now!

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