Games like Kittypocalypse: Ungoggled

"Kittypocalypse is a single-player strategy game with exceptional mechanics and beautiful visuals. Defend your planet from waves of evil alien kittens on 15 diverse islands, upgrading and building weapons to combat their armor. The game features campaign and skirmish modes, with a complex damage model and unique control system."

In Siege of Centauri, you assume the role of protector for Earth's first interstellar colony, located in the Proxima Centauri system. Faced with a ruthless alien invasion, you must strategically deploy defense structures and utilize orbital abilities to repel the attackers. With a variety of customization options, adjustable difficulty, and multiple game modes, this real-time strategy game offers an engaging and immersive experience within the Ashes of the Singularity universe.

Defense Grid 2 is the sequel to the original tower defense game, Defense Grid: The Awakening. It features a new story campaign with 21 maps, dynamic level movement, and an expanded cast of characters. The game also includes challenge mode experiences, multiplayer modes, and a level creation tool set for players to create and share their own levels. The Steam Special Edition comes with additional content.

"Taur is a single-player action-strategy sci-fi game with wonderful mechanics and fabulous visuals. Command the Prime Cannon, unlock and upgrade weapons and abilities, and build defenses to withstand different types of attacks. Every object in the environment is destructible, providing a tactically engaging experience, but beware of the heavy grinding."

"Tactical War: Tower Defense" is a challenging tower defense game that tests your strategic skills. Protect your base with 5 types of upgradable towers, using special abilities like teleport and mine to aid you in difficult situations. With 20 balanced levels and the ability to destroy landscape objects to place more towers, this game offers a unique twist on classic tower defense gameplay.

"Core Defense" is a strategic tower defense game where you protect your core from enemies using a variety of towers and abilities. Continuous upgrades and tech tree research enhance your defensive capabilities. With procedurally generated levels and a challenging difficulty curve, each playthrough offers a unique and engaging experience.

Defense Grid: The Awakening is a tower defense game where players protect their base by building fortification towers against incoming enemies. With 8 hours of main storyline and many more in challenge modes, each level is highly replayable and can be solved in various ways. The game features 15 different enemy types that increase in strength over time, providing a wide variety of challenges.

"MarZ: Tactical Base Defense" is a strategy game that challenges you to build a defense base and fight off zombie hordes on Mars. The game features a 20-mission story campaign, skirmish mode with customizable waves of enemies, and an intense "Outbreak" mode. Utilize powerful terraforming tools to create custom maps and share them via Steam Workshop, and research new upgrades for your towers. Recently updated with increased technology options and reworked balancing.

"Element TD 2 is a standalone sequel to the popular mod, offering 6 elemental types and 59 unique towers. Cooperate with up to 8 players to create elemental synergies and strategically place towers against increasingly difficult waves, culminating in an endless boss fight."

"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.