Merge Defense is a calming idle game where strategy plays a key role. Place guns on the battlefield and combine identical ones to create more powerful turrets. Enemies keep coming, but they are automatically destroyed, earning you cores even when you're not playing. Trigger intense enemy waves to get big bonuses, and prepare for a BOSS every fifth wave.
Collect power chips that can be merged like guns, then equip them to enhance your entire arsenal with additional damage, critical hits, splash damage, and rewards. Spend cores on permanent upgrades: an automatic merger for effortless combining, a quicker forge, a larger battlefield, more deadly crits, and more.
When you're ready, use Ascend to reset your arsenal and get permanent Command Stars that boost everything indefinitely. Your chips and upgrades are preserved. Your progress carries over between sessions and survives failed waves; only a voluntary Ascend resets it, and it brings rewards. Play for a few minutes or go for a long session—the game suits both styles.
How to play
YOUR TASK: combine weapons to expand your arsenal and withstand increasingly powerful attacks.
PROTECTION: foes keep coming, and your guns shoot automatically, earning cores both online and offline.
COMBINATION: select one gun and then another. If they're the same level, they merge and upgrade; if one is empty, it moves; if they're different, they swap.
ATTACK WAVE: press play to bring on the next tough wave. Clear it to get a large bonus. Every fifth wave features a boss. If you fail a wave, your arsenal remains intact — just try again.
CHIPS: enemies leave behind chips. These chips can also be merged (if they're the same type and level) and enhance your entire arsenal when equipped.
ENHANCEMENT: use cores to permanently improve your game with things like auto-merger, forge, larger board, critical hits, and more. Ascend to reset your guns and get permanent star bonuses.