In Tower Defense: Kingdom Reborn, you must establish defenses to maintain peace within your realm. The game's 2D graphics feature cartoonish animals and vibrant, colorful landscapes. Some visuals are amusing, such as a bunny in armor looking downcast, while others are endearing, like a dog wearing a helmet and braces.

Players can utilize various defense towers, including Archers, Mages, Barracks, and Cannons. Each tower's effectiveness can be enhanced through practice and actual battle application. Defeating monsters earns you Gears, which can be used to fortify your defenses or build new ones.

Your objective in the game is to construct a formidable wall to prevent the monster army from invading your territory. Gears serve as a currency obtained by vanquishing enemies, used for erecting or upgrading defensive structures. The Cannon tower deals damage over a wide area; the Archer tower has an impressive range; the Magic tower can penetrate fortifications; the Barracks tower obstructs the enemy's path with minions, among other capabilities.

Employing Meteor and other powerful special abilities is a viable defensive strategy, complemented by an offensive from the stellar population. Tactics such as Air Assault, Bombardment, and Icy Bomb are crucial. You'll need a diverse array of defense structures and unique skills to counter the various monster types, each with its own defensive strategy. The Stone Age people, the Taurians, the Vikings, and others won't pose a threat to you.

Upon completing a level, players earn diamonds, which can be spent on acquiring new weapons and enhancing their defense towers. You'll be defending across various terrains, including the High Prairie, Dry Desert, High Frozen Mountain, Deep Swamp, and Ancient Volcano. In Tower Defense: Kingdom Reborn, players can select the difficulty of each stage, but must first complete the level on the easiest setting. If you conquer a level more challenging than the previous one, you'll be rewarded with additional diamonds for completing it on the easier setting.