War Inc: Rising Merge and Evolution Guide — Forge Stones Strategy

Merge levels increase base stats and unlock new skill tiers. Merge 6 is the first major power spike. Merge 12 is max. Focus your Forge Stones on 3-5 core heroes — one level 8 hero is worth more than eight level 5 heroes. Never merge your last deployable copy of a hero you use.

Here's everything about the merge system, Forge Stone economy, and when to push vs when to wait.

Each merge level requires copies of the same hero plus Forge Stones (from level 6 onward). The stats increase per level, and certain levels unlock new skill tiers.

- Level 6: First major power spike for most heroes. Skill upgrades unlock.

- Level 7: Trigger Master passive unlocks. Also gives 100-gem Power Stance achievement.

- Level 12: Maximum. Strongest version of every skill.

Focus on getting your core team to 6 first before spreading resources to backups.

Forge Stones are required from Merge 6 onwards. They're the most scarce resource in the game. Here's where to get them:

- Hunting mode rewards (best consistent source)

- Infinite War

- Daily chests

- Event shops

Never spend Forge Stones on heroes you don't regularly use. The biggest mistake is spreading them across 10+ heroes instead of focusing on 3-5 core units. Pick your team and commit.

Merging consumes copies of the hero, temporarily reducing your roster. Plan accordingly:

- Merge between sessions when you won't need full strength for 12-24 hours

- Never merge your last deployable copy of a hero you actively use

- Save major merges for after daily missions and Arena placements

- Higher-rarity heroes cost more but gain more per level

Use the evolution calculator tool on this site to plan which hero to upgrade next based on your available resources.