Ethernal Season | Serene Seasons Addon
by PikaCat
Ethernal Season, a NeoForge addon for Serene Seasons, lets server admins hold the world in a chosen season, and covers the sub-seasons with clickable options.
What it does
An operator-restricted season command opens an in-chat panel, letting server staff choose any of the twelve Serene Seasons sub-seasons with one click or switch the seasonal cycle off and on. A quick lock action freezes the current state, and the automatic Mid Winter lock keeps a permanent winter in place when a server needs one. The mod is aimed at server operators who want a consistent cold atmosphere, permanent snow or a fixed season for a story or roleplay world.
Ethernal Season requires Serene Seasons, which supplies the seasons it controls. It is a server-side only mod for NeoForge, published for 1.21.1 only, and players join without installing it. The code is available as source, but the license is custom and the mod is not open source.
Key features
One-click sub-season selection
Clickable options set any of the 12 Serene Seasons sub-seasons directly from the admin interface.
Season command with chat controls
An admin-only command opens an in-chat control panel for changing and locking the season state.
Seasonal cycle toggle
Admins can switch the seasonal cycle on or off, keeping the world on a chosen season until it is turned back on.
Automatic winter enforcement
Winter can be enforced automatically, so players who join a locked world see the same permanent winter state.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Permanent winter worlds
A server keeps a constant cold atmosphere and permanent snow for its whole playtime.
Story and roleplay worlds
Operators hold a fixed season that matches the setting of a roleplay scenario or narrative.
Who it’s for: Server operators running Serene Seasons on NeoForge 1.21.1 who want to control seasonal progression for the whole server.
How it compares
NightLock is a NeoForge 1.21.1 mod, open source under the GNU General Public License v3.0 or later, and is required on the server with the client optional. Seasonal Let's Do is server-side only, open source under the Apache License 2.0, and covers Fabric, Forge, NeoForge and Quilt for 1.20 – 1.21.11, which reaches more loaders than this addon.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Ethernal Season | Serene Seasons Addon | NeoForge | 1.21.1 | Server-side only | 2026-05-03 |
| NightLock | NeoForge | 1.21.1 | Server required, client optional | 2025-09-04 |
| Seasonal Let's Do | Fabric, Forge, NeoForge and Quilt | 1.20 – 1.21.11 | Server-side only | 2026-04-06 |
Questions
Does Ethernal Season need Serene Seasons?
Does every player need Ethernal Season installed?
Which loader and version does Ethernal Season support?
In the catalog
Ethernal Season | Serene Seasons Addon is one of 8,016 Management mods on ModsFinder, and one of 2,689 Management mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from PikaCat
Similar mods
What the author says
Ethernal Seasons is a small server-focused addon for Serene Seasons that lets admins fully control seasonal progression and keep worlds in a permanent winter state. Perfect for modpacks and servers that want a consistent cold atmosphere, permanent snow progression, or story/roleplay worlds with controlled seasonal…
Official listing
- Modrinth page
- modrinth.com/mod/ethernal-season
- Owner
- PikaCat
- Published
- 2026-05-03
- Updated on Modrinth
- 2026-05-03
- Facts verified
- 2026-10-15