Sephiria Photosensitivity Guide — Seizure Warning, Flashing Effects and What the Transparency Options Actually Cover
Sephiria shows a photosensitive seizure warning at game start and has an Effect Transparency option for your own and party-member effects — but enemy and boss attack effects are not covered. What is officially confirmed, which encounters players flag, and how to report a problem.
Sephiria is a bright, fast, effect-heavy action roguelite — the appeal for most players, and the one thing that can make the game unplayable for players with photosensitive epilepsy or light-triggered migraines. Several people have said exactly that since the 1.0 release. This guide covers visual safety only; for control comfort and input load, see the Controls & Settings Guide.
The short answer: Sephiria has an official photosensitive seizure warning shown when the game starts, and an Effect Transparency option that fades your own effects, your party members' effects and companions'. Those options do not cover enemy and boss attack effects — that exclusion is deliberate and documented. If a specific attack is a problem, transparency will not remove it; report the encounter rather than hunting for a toggle that does not exist.The Warning Is Real — But Players Still Say They Never Saw It
Two things are officially confirmed:
- 1.0 Update (July 31, 2026): "A photosensitive seizure warning is now shown when the game starts." [Official]
- 1.0.23 (August 4, 2026): "Fixed an issue where the 'Photosensitivity Warning' UI could not be clicked on the title screen during the first (or second) launch of the game." [Official] The wording tells you where it lives — a clickable UI on the title screen — and that there was a window where you could not dismiss it.
So the warning exists and is not new. Yet the two most-helpful recent negative reviews, both from September 2026, state flatly that there is no epilepsy warning and no flashing toggle. Take that gap seriously in both directions: do not assume a warning will appear and register with you. Watch the title screen at launch, and if you never see one, treat it as a bug worth reporting rather than as proof the game is safe. Note also that the warning fires at game start, not before a specific fight — it cannot tell you which encounter carries the risk, which is what the sections below are for.
What You Can Turn Down: Effect Transparency
Sephiria's transparency system was built up over more than a year of patches. It is the only visual-safety lever the game documents today.
| What it covers | Status |
|---|---|
| Party member effects | Added 0.7.28 (Apr 24, 2025), default 'Slightly Transparent'; one setting is named 'Party Member fx - Fully Transparent' [Official] |
| Your own effects | "Added feature to change your own effect transparency" — 0.7.43 (Jul 1, 2025) [Official] |
| Companions | Companions and party members' companions also become transparent under the 'Effect Transparency' option — 0.7.47 (Jul 17, 2025) [Official] |
| Projectiles / Chain Lightning | Extended 0.7.32 (May 9, 2025) to projectile attacks and Chain Lightning [Official] |
| Solar Blade FX | Applied 0.10.10 (Jan 23, 2026); "certain Solar Blade animations" fixed again in 1.0.30 (Aug 20, 2026) [Official] |
Two practical notes. The piecemeal roll-out explains why the option can feel inconsistent — the 0.7.28 note admitted it was "a feature under development" not yet applied to attack FX or companion projectiles. And in co-op, enabling 'Party Member fx - Fully Transparent' once risked crashing the session when effects such as Solar Blade triggered; that was fixed in 0.9.3 (Oct 2025), so it is safe on 1.0.x. [Official]
A review from September 11, 2026 calls transparency for your own and allies' effects "a boon", but adds that some select flashing effects "could've just be fade in or out". [Community] That is the honest state of it: it helps greatly with the visual noise your own build generates, and does not touch everything.
What You Cannot Turn Off: Enemy and Boss Attack Effects
This is the part that matters most for photosensitivity — and the part players are asking about.
Enemy attack effects sit outside the transparency system by design. Patch 0.11.5 (April 3, 2026) lists: "Fixed an issue where some projectiles fired by enemies were affected by effect transparency." [Official] Transparency being applied to enemy projectiles was treated as a bug and removed. The consequence is direct: the option that fades a Sparkle-heavy build will not fade the attack that is actually flashing at you.| Encounter | What players report | Official corroboration |
|---|---|---|
| Chapter 3 alternate boss | A map-wide flashing attack that fills the arena; one reviewer said there was nowhere to stand to avoid seeing it, and that a friend without photosensitivity also struggled | No official note names this attack's effects — player-sourced [Community] |
| Final boss, Phase 1 | Eye pain and headache; one reviewer explicitly warned epileptic players | 1.0.21 Hotfix confirms a full-screen white screen effect in the Phase 1 full-screen attack, changed so you keep control while it is active [Official] |
| Certain enemies in general play | Two reviewers name flashing from "certain enemies and parts of the game" as why friends with epilepsy stopped playing | No official effect specification exists [Community] |
Note the asymmetry: the final boss white-out is officially acknowledged; the Chapter 3 boss and general enemy flashing are player reports only, not a verified effect list.
If an Effect Is Causing You Problems Mid-Run
- Pause and step away from the screen first. Sephiria supports pausing and abandoning an expedition — both confirmed by the 1.0.33 fix for the case where the player and boss died simultaneously and the game could not be paused or abandoned. [Official] Losing a run costs you a run; it is the correct trade.
- End the expedition rather than pushing through the fight. A reviewer who reached the final boss described doing exactly this at the Chapter 3 boss — learning to recognise the arena and ending the run on sight. [Community]
- Turn on Effect Transparency before your next attempt. It will not fix enemy attacks, but cutting your own and your party's effect layer removes real on-screen motion.
- In co-op, agree on low-effect builds. Transparency is per-player, so the host cannot fix a teammate's screen; build choices matter more than any setting.
- If it is still unplayable, stop and report it. No setting at the current version makes a specific flashing attack safe for you.
How to Report It — and What to Ask For
Two official channels accept this kind of report:
- Discord:
discord.gg/g7AaeBuyMV— the community's own advice in the "Photosensitivity" thread was to raise it in the Discord suggestion channel. [Community] - Email:
team.horay.game@gmail.com, with logs fromC:\Users\{Your_PC_Name}\AppData\LocalLow\TEAMHORAY\Sephiria(Player.logfor the current session,Player-prev.logfor the previous one). [Official]
The 1.0.33 announcement shows what the developers act on: for a bug they could not reproduce, they asked for recorded footage, game version, system specs and whether mods were in use. [Official] That is exactly what an accessibility report needs — footage of the specific attack, the boss and chapter, and your version number.
What to ask for, honestly: as of 1.0.33 (September 11, 2026), no announcement in the entire 106-item feed adds a setting that disables flashing or blinking. The request is real and unmet. [Official — absence of any such entry; Community — the "Photosensitivity" thread] Asking for a flashing-reduction toggle, with footage attached, is concrete and reasonable. Asking "where is the setting" will not find one, because there isn't one yet.FAQ
Q: Does Sephiria have an epilepsy warning?Yes: a photosensitive seizure warning was added in the 1.0 Update (July 31, 2026), shown at game start on the title screen, and a 1.0.23 fix repaired the case where that UI could not be clicked during the first or second launch. Players still report not seeing one, so do not treat it as a guarantee you will register it. [Official / Community]
Q: Is there a setting to turn off flashing lights?Not as of 1.0.33. Effect Transparency covers your own effects, party-member effects and companions — not enemy or boss attack effects. [Official]
Q: Which boss is worst for flashing?Players most often name the Chapter 3 alternate boss (map-wide flashing attack) and the final boss Phase 1, where a full-screen white effect is officially confirmed. [Community / Official]
Q: I want to help get this fixed. What do I send?Footage of the specific attack, your game version, system specs and whether you use mods — the list requested in 1.0.33 — to team.horay.game@gmail.com or the Discord (discord.gg/g7AaeBuyMV). [Official]
Related Guides
- Controls & Settings Guide — Keybinds, controller setup, performance settings and input comfort
- Boss Guide — Attack patterns and how to read them
- Chapter 6 Final Boss Guide — The final boss, phase by phase
- Crash, Launch & Black Screen Fix Guide — If the game will not start or display correctly
- Sephiria FAQ — Common questions in one place