Games like MechDefender

"Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization, and replayability. Carefully plan your maze and build advanced structures to defend against alien hordes, using active abilities to tilt the battlefield in your favor. Level up and gain access to Perks, allowing you to specialize your strategies and master the game on all difficulties."

Hero Defense is a fantasy tower defense game where players summon heroes and build defenses to protect their kingdom from invading hordes. Players can upgrade heroes and towers, collect loot, and complete quests to unlock new content. With various game modes, including a story-driven campaign and survival mode, Hero Defense offers a challenging and engaging experience for strategy fans.

"Ancient Planet" is a Tower Defense game where you defend an ancient civilization's stronghold from invasive alien hordes using upgradable towers and diverse strategies. The game features 40 unique levels, a variety of enemy types, and improvements that can be reset and redistributed at will. The game's storyline and setting are based on the memories of intergalactic war veterans and were created with input from the High Council of Intelligent Civilizations of the Galaxy.

"Rock 'N' Roll Defense" is a challenging tower defense game where you must protect rock concerts from various minions threatening to end the party. Choose your band, place and upgrade speakers, and employ strategies across 40 stages with 20 enemy types, including four bosses. The game features a rocking soundtrack with 10 music tracks from amazing artists, which can be downloaded for free.

"Over 9000 Zombies!" is a frenetic first-person shooter where players must survive waves of zombies in various maps. Utilize a wide range of weapons, from pistols to grenade launchers, to annihilate the undead hordes and progress through the game's challenges. With online co-op mode, team up with friends to exterminate the zombie menace together. Fight for survival and prove your mettle against over 9000 zombies!

In "Blood and Zombies," players take part in a thrilling fight for survival against hordes of zombies in this first-person shooter and tower defense hybrid. Choose one of four heroes, build up your fortress, and deploy various defensive structures to protect humanity's last stand. With each victory, upgrade your base and weapons to face even greater challenges in this post-apocalyptic world.

"Sentinel 3: Homeworld" is a sci-fi tower defense game with an epic campaign across 20 levels and over 20 unlockable weapons. A powerful commander unit can level up and gain new abilities, and customization of weapon loadouts is encouraged. Endless modes, Steam achievements, and exclusive music by Specimen A are also included.

"Northend Tower Defense" is a strategy game with big battles and smooth performance. Choose from over 20 unique units, each with their own abilities, and upgrade them as you progress through 8 different levels. Use skills as the commander to turn the tide of battle in your favor.

"Northend Open Tower Defense Battle" is a real-time Tower Defense game featuring 8 distinct soldier types with unique strengths and weaknesses, and future additions of vehicles and aircraft. Players can engage in large-scale battles on two levels, the desert and the beach, with over 40 upgrades available to enhance their chosen units based on the situation. The game is optimized for smooth performance despite the high number of units involved.

"Artificial Defense" is a unique game that combines elements of RTS, Tower Defense, and Orbital Shooter genres. Your mission is to defend your Operation System from intruding creeps using an arsenal of 21 offense weapons and 21 defense towers. As you progress, you can earn RAM to upgrade your arsenal and hardware levels, starting from an analog punch-tape system and evolving to a quantum AI. The game features 49 challenges across 7 servers and an original soundtrack to complement your gameplay.