Mergehold: Tower Defense

Merge towers. Empower your defense. Hold the realm. Mergehold is a merge tower defense where every battle is a puzzle: buy towers, merge matching pairs into stronger ones, and place them to stop the endless siege. BUILD YOUR DECK Choose the 3-5 towers you take into battle. Poison and flame? Ice and lightning? Neighbouring towers form powerful synergies — your deck is your strategy. DUEL REAL PLAYERS Fight 1v1 duels against recorded runs of real commanders. Same siege, two keeps: outpace your rival, survive their stragglers, earn trophies and climb through the arenas. CONQUER 10 REALMS 120 handcrafted levels across dark forests, poison swamps, fungal valleys, scorching deserts and frozen wastes — each realm with its own monsters and bosses. MORE WAYS TO PLAY • Endless Siege — weekly seeded runs with a global leaderboard • Nightmare Mode — twice the power, separate stars • Season Pass — 30 tiers of rewards, renewed monthly • Garrison — your keep gathers gold while you are away 12 unique towers, permanent upgrades, daily quests, achievements and a monster codex to complete. Play offline anywhere — no connection needed for the campaign. The horde is at the gates, Commander. Merge, empower, defend!