TheConstant
by EdwinLEEjava
TheConstant brings a Don't Starve-style hardcore survival layer to Fabric, with sanity, food spoilage and seasons added on top of vanilla play.
What it does
Players manage a sanity attribute alongside health and hunger. Sanity drops from darkness, hostile creatures and certain foods, and low sanity brings on visual and audio effects such as screen distortion and ambient sounds. Food affects health, hunger and sanity in different amounts, and monster meat or other special ingredients can carry negative effects. Food rots over time and can be turned into compost or fuel. Season, temperature and darkness are part of the survival loop, and cooking is handled through a crock-pot recipe system.
The mod adds a tech crafting system with a Don't Starve-inspired interface. Recipes are found through discovery as the player explores, and the crafting screen groups them into categories with a tech tree for progression. An experimental Evergreen Forest biome adds custom trees, saplings, berry bushes, grass tufts and twigs, along with spider dens and custom creatures. Using the constant item opens the dimension where these areas are found. TheConstant runs on the client and the server, so both sides need the mod, and it is published for Fabric only on 1.21.10.
Key features
Sanity system
A sanity attribute sits beside health and hunger and changes with darkness, monsters and selected foods.
Food spoilage
Food rots over time, and spoiled items can be composted or used as fuel.
Crock-pot cooking
Cooking follows a recipe planning system that weighs food effects on health, hunger and sanity.
Tech crafting
Recipes are found through discovery and sit in categorized menus arranged along a tech tree.
Evergreen Forest biome
An experimental biome in a Don't Starve aesthetic adds custom trees, berry bushes, twigs and spider dens.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want a Don't Starve-style survival challenge on Fabric, and server owners who run survival worlds for their players.
How it compares
Sanity System is a Fabric mod for 1.21.4 with a client and server environment, under All rights reserved and not open source. Sanity Level is open source under the MIT License, covers 1.21 – 1.21.11 on Fabric, and also runs on client and server. Auto Biter is a client-side only mod under the MIT License for 1.21.1, so only the client needs it. Hungerbound is server-side only, under the MIT License, for 1.21.5 – 1.21.7.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| TheConstant | Fabric | 1.21.10 | Client and server | 2026-04-17 |
| Sanity System | Fabric | 1.21.4 | Client and server | 2026-03-31 |
| Sanity Level | Fabric | 1.21 – 1.21.11 | Client and server | 2026-08-07 |
| Auto Biter | Fabric | 1.21.1 | Client-side only | 2026-06-15 |
| Hungerbound | Fabric | 1.21.5 – 1.21.7 | Server-side only | 2025-07-09 |
Questions
Does TheConstant need to be installed on the server?
Which loader does TheConstant use?
Can the sanity system be turned off?
In the catalog
TheConstant is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 15,569 mods support Minecraft 1.21.10.
Similar mods
What the author says
Don't Starve MC brings the hardcore survival experience of Don't Starve to Minecraft. This mod introduces core survival mechanics including the Sanity system, food spoilage, seasonal changes, and temperature management, creating a challenging survival experience that differs from both vanilla Minecraft and the…
Official listing
- Modrinth page
- modrinth.com/mod/theconstant
- Owner
- EdwinLEEjava
- Published
- 2026-03-09
- Updated on Modrinth
- 2026-04-17
- Facts verified
- 2026-10-15