The greatest rock-racing, tower defense, art history game is back! Like the title says, Bigger & Boulder cranks up the surrealism and gameplay with chaotic 4P multiplayer, new time periods, and improved graphics, physics, and destructibility powered by UE4 to be, well… BIGGER AND BOULDER.

<p>The sequel to the acclaimed tower defense strategy game, Defense Grid 2 promises a completely new storyline with all new aliens and towers, multiple new game play modes and level types, new conflicts, and enhanced graphics. The game introduces new worlds and threats to test your tower placement strategies. With a bold new look, a compelling single-player campaign, and the addition of new game modes, online player-versus-player and multiplayer co-op, every play-through brings new opportunities and challenges.</p>

<p>Two castles stand opposed, bridged by an uneven, narrow pathway. One is yours, and you're quite fond of it. See how the parapets catch the sunlight ever so stylishly? The other is your enemy's; they're a jerk, and their crappy crenellations are driving down your property values. Also, their castle sucks, justification enough to try crush it using an enormous rolling stone. Unfortunately, they'll have a chance to plan and build up some security, doing everything they can to derail your razing rock.</p>

Orcs Must Die! 3 ushers orc-slaying mayhem to a previously unimaginable scale. All new War Scenarios pit players and their friends against the largest orc armies ever assembled. Mountable War Machines give players the essential firepower to heave, stab, carbonize, and disarticulate the abominable intruders. Orcs Must Die! 3 is the long-awaited successor to the award-winning series.

Rock of Ages 3: Make & Break is competitive tower defense and arcade action rolled up with ACE Team's quirky, Monty Python-esque humor into one giant, creative game for the ages. 

Jump into the expansive, gut-busting story for an eclectic adventure featuring bizarre and irreverent takes on legendary characters, or for the first time, create and share your own levels to compete with friends and strangers online in a real-time mix of hectic tower defense and epic boulder-racing arcade action.

Kick some grass in Plants vs. Zombies Battle for Neighborville, the wackiest shooter yet! Unearth 20 fully customizable character classes at launch in one social region, three free-roam regions, one PvE mode, six PvP modes, including Battle Arena, and more!

Take on wild beasts, ruthless soldiers, and ancient gods in this 2D Action-Platformer inspired by Tower-Defense combat.

Put your foot soldiers, snipers, cavalry, and fighter pilots to the test in Toy Soldiers. Toy Soldiers is an action-packed strategy-based game in which players command antique WWI toy soldiers vying for control of the trench-filled battlefields of Europe. Deploy an exciting arsenal such as tanks, cavalry, biplanes, and flamethrowers in vintage WWI toy dioramas.  Toy Soldiers allows you to take control of individual units or control the entire battlefield from a strategic view.

Thousands of alien machines are descending on Earth's first interstellar colony in this massive-scale new tower defense game from the publisher of Ashes of the Singularity and Sins of a Solar Empire: Rebellion.

Best Tower Defense PC Games