Necesse is a top-down, open-world sandbox action-adventure game where players explore, craft, build, and battle through a procedurally generated world. The game features settlements, recruitable settlers, diverse biomes, dungeons, and challenging bosses representing significant milestones. Boss encounters are initiated through specific summoning methods or tasks. These formidable foes possess unique attacks, behaviors, and a substantial health pool that scales with the number of players, increasing by 80% of the base HP for each player beyond the first.
| Image | Boss | Summon |
|---|---|---|
| Evil's Protector | At night, use Mysterious Portal (rare zombie drop or Forest Cave chest loot). | |
| Queen Spider | Destroy egg in spider nest (snow caves) OR use Royal Egg in snow caves. | |
| Void Wizard | Attack in Dungeon bottom OR use Void Caller. | |
| Swamp Guardian | Use Spiked Fossil in swamp caves. | |
| Ancient Vulture | Use Ancient Statue in desert. | |
| Pirate Captain | Not summonable; found in center of pirate village islands. | |
| Reaper | Use Shadow Gate. | |
| Cryo Queen | Use Ice Crown. | |
| Pest Warden | Use Decaying Leaf in Deep Swamp Caves. | |
| Sage and Grit | Use Dragon Souls at pedestal in Deep Desert Caves. | |
| Fallen Wizard | Not summonable; found on 2nd floor of deep desert temple (after Sage and Grit), respawns after cooldown. | |
| Mother Slime | Complete Slime Cave Incursion. | |
| Night Swarm | Complete Graveyard Incursion OR use Swarm Signal within Incursion. | |
| Spider Empress | Complete Spider Castle Incursion OR use Crown of Spiderkin within Incursion. | |
| Sunlight Champion | Use boss portal in Sun Arena Trial Incursion (fill lava pit first). | |
| Moonlight Dancer | Use boss portal in Moon Arena Trial Incursion (remove interior walls first). | |
| Crystal Dragon | Complete Crystal Hollow Incursion. |