Games like Legion 51

"Animal Super Squad is a user-generated content platform featuring animals as playable characters and various vehicles. Create and share your own levels with easy-to-use scripts and hundreds of assets, or play through the smooth learning curve of the developer-made Adventure Mode. Choose from chickens, fish, or sloths and experience challenging levels with unique gameplay elements."

Incredicer is a single-player strategy game where you roll dice to earn money and automate processes by buying helper hands. Featuring splendid gameplay, wonderful graphics, and a good soundtrack, it challenges players to collect dark matter and explore a skill tree to upgrade dice and unlock active skills. The game involves heavy grinding but offers limited replayability.

Outhold is a single-player tower defense strategy game featuring a deep upgrade tree and incremental-style meta-progression. Players engage in addictive gameplay, upgrading towers and experimenting with synergies across 10 levels and endgame content, offering around 4-5 hours of challenging, grind-heavy strategic action with good graphics and replayability.

"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.

"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."

"2112TD: Tower Defense Survival" is a futuristic tower defense game with strategic base building elements. Defend your refinery from alien invaders across procedurally generated levels with a variety of turrets and special abilities. Upgrade and customize your arsenal to survive increasingly challenging waves in this intense, sci-fi tower defense experience.

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.

In "Rogue: Genesia," a action rogue-lite game, play as Rog and use an array of weapons and over 170 passive upgrades to defeat vast enemy forces. Collect powerful artifacts and make choices that affect your adventure, while choosing from different avatars with unique playstyles. The new Cat Pet DLC is also available.

In Vampire Survivors, players must survive nightly waves of monsters in rural Italy, using a variety of weapons and power-ups to increase their chances of survival. With roguelite elements, each playthrough is unique as players try to end the reign of terror of the evil Bisconte Draculó and restore good food to the land. The game features minimalistic gameplay with no place to hide, challenging players to survive as long as possible and collect gold for the next survivor.