Ring Keep: Merge Defense

A pocket tower defense inspired by the classic "Random Defense" custom maps! ■ Fair by design · Units and hidden recipes unlock only by playing. No power for sale · No forced ads: only optional rewarded ads you choose to watch Spend gold to summon random units, then merge three identical units into a stronger grade. Monsters circle your keep without end. Stop them before they pile past the limit, and defeat the boss that arrives every 10 rounds before time runs out. ■ Summon & Merge · Five grades: Common → Rare → Epic → Legendary → Mythic · Merge 3 identical units into a random unit of the next grade! · Lucky Summon and rerolls with lumber · 20 hidden units you can only get from secret recipes (10 unlock through achievements and evolutions) ■ 5 Classes, 35 Units · Warrior: melee stuns (but can't hit flying monsters) · Archer: hits several enemies at once · Mage: area blasts · Cryomancer: slows enemies · Assassin: armor shred and poison · Mythic and hidden units cast signature skills like Meteor and Time Stop ■ A Different Build Every Run · Level up by slaying monsters and pick 1 of 3 perk cards · Attack, speed, economy, hidden synergies — no two runs alike ■ Challenges That Last · 4 difficulties, each with Ascension levels 1–10 · Daily Challenge: everyone plays the same run, with a leaderboard · 20 Play Games achievements · Clear round 40 and see how far you get in Endless mode ■ Satisfying Sound · 9 chiptune tracks whose tension rises with the battle · Unique sounds and vibration for bosses, classes, and skills ■ Recommended for · Fans of classic Random Defense–style custom maps · Anyone who wants quick runs and long-term challenges ■ Features · Plays offline · Ads only when you want a reward. x3 speed, battle stats and field themes are free for everyone · Auto-saves whenever you leave — continue anytime · Cloud save with Play Games: keep your records and collection when you switch devices · 한국어 · English · 日本語 · 繁體中文 · Português · Español Graphics & sound effects: Kenney (CC0) · Font: Galmuri (SIL OFL 1.1)

Ring Keep is out! • Pixel tower defense: summon at random, merge 3 to grow stronger • 4 difficulties × Ascension 1–10, endless leaderboards at Ascension 10 • Daily Challenge with the same run for everyone, 20 achievements, cloud save • No power for sale. Ads only when you want a reward