SeasonalSLSBridge

Seasonal SLS Bridge 1.5.1

Seasonal SLS Bridge connects StarLevelSystem with your choice of Seasonality (RustyMods), Seasons (shudnal), or ValheimSeasons (Morgnar) to give Valheim's creatures seasonal combat traits and optional visual variants.

The goal is simple: make the world feel more alive and less predictable without changing StarLevelSystem itself, replacing modifier names, or taking control away from the active season provider.

Community & support

For mod questions, bug reports, ideas, texture contributions or general discussion, join the community Discord:

https://discord.gg/kN3cqHqWYA

Version 1.5.1 — documentation correction

This release removes internal update and test documents from the public package and corrects the README links. Gameplay, DLL, textures, icons, and configuration remain unchanged from 1.5.0.

New in 1.5.0 (also included in 1.5.1)

Choose one season provider: RustyMods Seasonality, shudnal Seasons, or Morgnar ValheimSeasons. They are optional alternatives, not three required dependencies. Install exactly one season mod separately; the mod manager no longer installs Seasonality automatically for this bridge.

• New General.SeasonProvider setting: Auto, Seasonality, Seasons, ValheimSeasons, or Disabled.
• Auto chooses Seasonality first, then Seasons, then ValheimSeasons if more than one is installed; using just one provider is strongly recommended.
• Reads each provider's effective season, including server overrides where supported. Local visual previews do not determine creature birth seasons.
• Keeps the creature's saved birth season and existing modifiers. No rerolls or retroactive changes when switching providers.
• Re-enables the optional visual system with Seasonality 3.8.4 after inspection, and adds coordination for Seasons material changes. Actual in-game verification is still pending.
• Updates compatibility checks for Valheim 1.0.17 and StarLevelSystem 1.25.1 and adjusts creature hover-name presentation for SLS changes.
• No changes to existing seasonal chances, ecology, modifier priorities, icons, creature texture content, or gameplay authority.

Compatibility status: Seasonality 3.8.4, Seasons 1.10.5, ValheimSeasons 1.2.0 and SLS 1.25.1 were checked against their DLL APIs. Complete in-game, multiplayer and visual verification is still pending. Newer versions (including SLS 1.26.0) are not explicitly verified.

> Historical note: 1.4.7 was documentation-only; seasonal hover icons were introduced publicly in 1.4.8. See the Changelog for previous releases.

Visual System

The visual system complements the installed season provider instead of replacing it. It only applies supported local creature material overrides while preserving safe handoff when materials are controlled by other mods.

> Current artwork status: fully finished public custom textures are currently included for the Troll, the Greydwarf family and Skeletons. > The broader visual framework and creature catalog are already prepared for additional families, which will continue to be added gradually.

When a supported creature has a matching modifier, Seasonal SLS Bridge can apply a local visual variant for that creature.

Examples include:

• Frost — winter / cold appearance
• Fire — heated or volcanic appearance
• FireNova — more unstable fire appearance
• Poison — toxic / overgrown appearance
• PoisonNova — unstable toxic appearance
• Lightning — storm-charged appearance
• ElementalChaos — unstable arcane appearance
• Big — winter heavy / imposing appearance where supported
• SoulEater — dark generic appearance
• Brutal — aggressive generic appearance

Unedited or unsupported properties are left alone so the active season mod can continue handling its normal seasonal visuals.

BalrondHumanoidRandomizer variants

For supported Skeleton and Draugr variants created by BalrondHumanoidRandomizer, the bridge resolves the randomized prefab back to its catalogued base creature and reuses that base creature's existing texture set.

This avoids maintaining duplicate textures for every randomized variant and does not cause intentionally excluded base prefabs to be added back into the visual catalog.

Version 1.4.6 also improves material-property handling: unrelated property blocks no longer block supported texture maps, failed first applications can be retried, and visual warnings include the affected prefab name for easier diagnosis.

Visual priority

If a creature qualifies for more than one supported visual, the bridge uses a fixed priority:

1. Elemental modifiers, with seasonal primary elements taking priority
2. SoulEater
3. Brutal
4. Big

This order is unchanged in 1.4.6. Big can now use a supported visual throughout the year instead of depending on a specific season.

This keeps the result predictable and avoids multiple systems trying to overwrite the same material.

Elemental visual fallback

Elemental modifiers applied directly by StarLevelSystem can still use the matching visual even if the creature has no recorded birth season.

For visual selection only:

• Frost falls back to winter
• Fire, Lightning and FireNova fall back to summer
• Poison, ElementalChaos and PoisonNova fall back to spring
• Supported autumn variants can act as an out-of-season fallback when appropriate
• Big can use its supported visual in any season

These fallbacks are visual only. They do not write a birth season, change titles, reroll modifiers or alter gameplay state.

Features

Every eligible new creature stores its birth season.

Season, birth biome and natural affinity determine the seasonal modifier profile.

With the default 100% gate and EnsureSeasonalModifier enabled, an otherwise empty valid roll can use a Minor seasonal fallback: