Necro Factory

Idle army building

Necro Factory is a PC idle game about spawning troops and building a skeleton army. You summon heroic spirits to serve as guardians, then send spirits and troops to conquer land across a perilous continent. The game also has competition between players, including battles for territory and cities.

Spirits and troop builds

Summoning spirits gives you guardians with different skill mechanics, which you use to put together lineups. You can awaken spirits to give them new forms and skills. The game emphasizes a high drop rate for powerful spirits, though it doesn't give a specific rate.