Deliria Bosses Guide

Deliria’s Steam pitch talks about nine bosses and “everything underneath them,” plus nine Lovecraftian gods in the shorter widget copy. An older store blurb still says 8 epic bosses. This wiki will not pretend those two sentences are a roster. We name the fights playtests and public videos already named, then we tell you how to prep. Rankings belong on the boss tier list. Style belongs on the combat guide. The guides hub is the index.

There are hundreds of ordinary nightmares between the big names. Slimes, spears, arrows, and biome pests are the pack that teaches the meter. A boss is what you pull when the house exists and the rank is not a mystery.

Confirmed names (and spellings)

Eye of Deliria. The poster nightmare. Creative-mode footage parks it on a team against Prince Petri. Night forest shots and the wiki hero art treat this as the face of the game. Expect a fight that wants camera space, not a two-block arena.

Prince Petry / Prince Petri. Both spellings appear in public materials (Petry in titles, Petri in narration). Playtesters compared it to a king slime: readable, early, still able to ruin a greedy night. Development footage goes looking for gold before the prefight. That pipeline is mining, not a secret boss key.

Yoggoth. The wake-up line is Yoggoth Has Awoken! Team spawn is part of how people have seen it in creative or test setups. Treat it as a named Lovecraftian exam, not a slime variant.

Leapus / Lepus. A playtest name with two spellings. We will not attach a fan element, a fake drop table, or a copied Terraria analog beyond “this name showed up in playtest talk.”

That is the list. If a streamer invents a fifth title, it does not enter this page until Linesway shows it.

How to prep without a patch bible

1. House first. Building and the NPC page are how you have a spawn of people who can hold a door. Boss nights that start from a hole in the rain are just deaths with a title card.
2. Read the HUD. Hearts, mana stars, numeric HP like 120/200, and a style letter that can hit SSS with +55% DAMAGE. Controls is the widget page.
3. Bring more than a sword. Guns, bows, and magic are the other three families. Named playtest weapons include Bloodbringer, Hell Serpent, Space Ripper, and ShotCopperBullet. Rank them later on the weapons tier list.
4. Gold and a furnace if you are copying the Petri route. Quartz and KeyObsidian walls are the other resource language. Dungeon brick that will not mine is not a boss shortcut.
5. Style practice on trash. If you cannot keep a letter on slimes, Eye of Deliria is a waste of a night. Playstyles helps you pick a lane.

Creative mode can spawn these encounters on teams so they fight each other. That is a lab. Survival is the test. Mounts, pets, summons, and flight will change the lab; they do not add extra official names.

Invasions are not bosses

Blood Moon and Hastur’s Invasion are the two named invasions. They can feel like bosses because the sky is doing something theatrical. They are still town events. Keep them on invasions. A world that disables PvP still has to survive those nights with friends — multiplayer for the session rules.

Do not invent a third invasion to fill a calendar. Do not invent a hardmode table because a playtester muttered that most pre-hardmode bosses might already be coded. “Might be coded” is not a name.

Biome and soundtrack context

Seventeen biomes exist to make the walk to a boss feel like a place: forests, deserts, frozen ridges, ruins, rain, snow, blight, mushrooms, dungeon, Lovecraftian ground. The biome tier list ranks those walks. Claire Noelle’s score (twenty-plus tracks; soundtrack DLC lists twenty-seven) will make a prefight feel finished. It is not a signal that you are overgeared.

Getting started remains the right page if you have not carved a door. Buy-or-refund talk belongs on the Deliria review, not on this roster. Store-date history sits on release timing. The game is on Steam; the missing five gods are still unnamed, not unreleased as a product.

Only four boss names are safe to print today: Eye of Deliria, Prince Petry (Petri), Yoggoth, and Leapus (Lepus). Steam still sells nine gods and, in an older blurb, eight epic fights. Do not fill the missing roster with fan names. Prep gear, style rank, and a team, then wait for Linesway to print the rest of the HUD.