SPHERE vs Grid Defense

- Worldview - The Sphere (Earth) is now facing the threat of annihilation by invaders. Humanity has been forced from their homes and has begun developing new weapons in underground facilities. As countless lives and resources are lost, humans have finally succeeded in developing a new weapon capable of opposing the invaders. Now, having endured years of agony, it is time to advance toward the hope of liberating the Sphere! Humanity is now launching a counteroffensive! - Game Overview - This is a simple placement-style tower defense game where you place units to defeat incoming enemies! As you defeat enemies, your resources increase, allowing you to place new units or upgrade existing ones! - Game Difficulty - Difficulty levels are EASY, NORMAL, and HARD! This game is suitable for tower defense beginners to advanced players, offering a challenging gameplay experience for everyone! There are 10 refined stages for each difficulty level, with each stage lasting about 5 to 15 minutes! Enjoyable even during a short break! Whether you are new to tower defense or a master, this game is for you! - Unit Types - Players can use the following seven types of units: [Attack Units] Each unit excels in different situations, so place them appropriately according to the battlefield conditions! Standard Attack Turret: A unit with a short attack interval, specializing in defeating enemies one by one. Area Attack Turret: A unit that excels in attacking multiple enemies with explosive blasts. Piercing Attack Turret: A unit that excels in attacking enemies lined up in a straight line. [Support Units] These units enhance the advantages of friendly units, so place them without hesitation when you have extra resources! Cooling Turret: A unit that slows down the speed of enemies. Incendiary Turret: A unit that increases the attack power of attack units. [Support Attack Units] Use these units to weaken enemies before friendly units attack or as an emergency response to prevent enemy breakthroughs! Fixed-Point Attack Unit: Provides pinpoint missile support attacks at specific locations. Linear Attack Unit: Conducts satellite laser bombardment at designated linear locations.

GRID DEFENSE is a fast, hand-tuned tower defense game about one simple job: hold the line. Six towers. Seven breeds of creep. One winding path. Place your defenses, upgrade under pressure, and stop everything the grid throws at you across 25 escalating waves — then push into endless mode. FREE TO START Download and play the first 10 waves free. Clear wave 10 to unlock the complete game with a single one-time purchase. No ads. No timers. No subscriptions. THE FULL GAME UNLOCKS • All 25 waves + endless mode • A second battlefield — The Quarry, where terrain fights back. Golems terraform the ground as they march, ore pockets pay out gold when cracked, and a keystone wall splits the map — hold it or watch the shortcut open • Tower-smashing GOLEMS — armored bruisers that stop to wreck your towers • WARDENS that raise energy shields — burst them before they recharge • A deployable DWARF hero — a roaming gunner only the wasps can touch, who levels up to repair wrecked towers and mine ore for gold • Bosses and the final victory stand • The global online leaderboard — submit your score and claim your rank SIX TOWERS, EVERY ONE USEFUL Gunner, Cannon, Frost, Venom, Tesla, Sniper — each with upgrades and a role. Freeze a swarm, chain-zap a cluster, poison the tanks, or snipe through armor. There's no single right build. AN ORIGINAL SCORE A title theme by IVEM BEATS plays you in, and every tower fires its own sound — know what's shooting without looking. BUILT FOR TOUCH Designed for the phone from the ground up — tap to build, tap to upgrade, pinch and pan the battlefield. The board fills your screen edge to edge. Landscape, smooth, and playable offline. No ads. No subscriptions. No login. Just you, the grid, and the line you have to hold.