Keyword Guide
Sephiria supports four-player multiplayer in the collected 1.0 material, and the strongest documented approach is to split combat roles instead of making every player chase the same Weapon plan.
Direct Answer
The supplied 1.0 gameplay transcript explicitly describes four-player multiplayer and says different players can use different playstyles, including support. The broader researched game summary also describes online co-op for up to four players. This page does not claim local co-op, cross-play, or console multiplayer because those details do not appear in the supplied keyword sources.
Exact host and join steps are 待确认. The materials mention a co-op mode and multiplayer roles but do not show a complete lobby flow, invitation menu, connection requirements, or region settings. Use the current in-game interface and official channels for those version-sensitive details.
Role Split
The Weapons research recommends a simple division: one player on Crossbow or Staff for safer damage, with another on Greatsword for room clear. Sword and Shield or a sustain-leaning Staff is listed as a reasonable support direction, while a fragile Dagger plan without a reviver is identified as a risk. These are community recommendations rather than mandatory classes.
Each Weapon still has its own normal, dash, and special actions plus branching Anvil routes. A team can cover range, stagger, elemental pressure, blocking, and mobility without forcing identical builds. The sources do not define fixed tank, healer, or damage roles, so treat those labels as practical coordination rather than official matchmaking categories.
Shared Planning
The Weapons source advises trading Anvil priority so two players do not starve the same upgrade pool. It also suggests that players choose a Weapon spine based on the job they can perform safely, then match elemental offers to the Artifacts and Tablets already on their boards. The exact way Anvil choices are shared or separated in current co-op is 待确认.
Build research supports the same coordination principle. Frozen Smelt needs a specific Glacier core, Formless Dance variants depend on different starting conditions, and Minigun routes need MP support after documented changes. If every player forces a core-heavy recipe, the group has fewer safe pivots when pieces fail to appear.
Support
The materials do not provide an official support skill list, but they do identify Weapon and inventory directions that can reduce pressure. Sword and Shield provides blocking and defensive tools, Staff can contribute elemental area control, and Greatsword can clear packed rooms. Artifact-created Companions such as Collin and Mini Ballista are allied units rather than selectable players.
Support should not be confused with guaranteed healing. The older guide mentions recruiting Colin against a difficult final boss and describes lifesteal, MP management, defense, and revival-like effects in specific builds, but these are not universal co-op abilities. Current teammate revive rules and any shared healing behavior are 待确认 in the supplied sources.
Build Examples
The build library labels its six featured setups by evidence and recorded version. Some routes have community clear claims, while Formless Dance and Minigun include variants with video proof and importable presets. The Biryuu Katana source is described as having co-op support, but that label does not prove that every component behaves identically for all party members.
Keep evidence attached to the exact variant. The White Rabbit Minigun video shows a Hard 35 run, while the Scholar Lizard tank version is a different 1.0.23 recipe with no attached same-run clear video. In co-op, a proven solo setup can be a starting point, not proof of party-wide balance or compatibility.
Connection Limits
The seven research files do not document ports, NAT behavior, reconnects, host migration, input-device mixing, latency compensation, or save ownership. They also do not verify whether a guest keeps every unlock or currency gain after leaving. Each of these details is 待确认 and should not be inferred from the existence of four-player multiplayer.
Mod compatibility online is also unconfirmed. SephiriaMod changes Weapons, stats, currency, Costumes, and other progression, but its source does not provide a verified multiplayer safety statement in the collected text. Do not assume a client-side tool is harmless to other players or accepted in an online session.
Practical Checklist
Before descending, agree on Weapon roles and decide which player will prioritize range, room clear, defense, or elemental control. During the run, communicate when a core build piece appears and be willing to pivot rather than contest every reward. Keep enough MP and movement for boss patterns instead of relying on teammates to rescue an unstable damage loop.
After the run, use Destiny Inscription and village progress to strengthen the next attempt, but verify current unlock behavior in game. If the lobby or invitation flow differs from older footage, use the current interface rather than an unverified step list. The verified scope is four-player multiplayer; the detailed setup procedure remains 待确认.
Research Method
This page uses only the seven supplied Sephiria research documents: the Builds, Characters, Guide, Mods, Secret Rooms, Tier List, and Weapons files. Navigation labels, advertisements, social buttons, repeated transcript filler, and claims that did not answer the target keyword were removed. A statement was retained only when the collected text tied it to a named system, documented observation, source version, or clearly identified community opinion.
When sources disagree, the newer and more specific record takes priority while the conflict remains visible. The clearest example is the Costume count: the older alpha guide lists 17, while the v1.0.24 character roster records 27, so current character pages use 27 and explain why the older number is not treated as current. Build claims also keep their recorded patch and evidence label because a community recipe, a video clear, and an official game fact are not interchangeable.
No missing value is reconstructed from memory, search demand, or a similar game. Unverified save paths, current mod compatibility, Cheat Engine tables, trainer downloads, multiplayer networking behavior, spawn rates, and post-source balance changes are marked 待确认. Players should treat current in-game text and newer official patch information as authoritative whenever it conflicts with an older community observation.