BreedingUpgrades
Gives offspring of your tamed creatures a rare chance to spawn with an extra star.Disclaimer: Most of mods I work with are some old and outdated ones that their authors haven't updated so far to match 1.0. I am not a professional modder myself, but I am good with coding and gaming. If you experience any problems with the mods I published, you can find me in Hexium discord server by typing DMT.
BreedingUpgrades
A Valheim mod that gives offspring of your tamed creatures a rare chance to spawn with an extra star. Fork/update of Dumba's BreedingUpgrades, maintained for Valheim 1.0.x.
GitHub: 
DaiMinhTri/BreedingUpgrades
Features
Star Upgrades
Offspring have a configurable percentage chance (default 5%) to gain a star level when born.
Egg Support
Works for both mammals (Wolves, Lox, Boars, Moose) and egg-layers (Chickens, Asksvin). Eggs are intercepted during procreation and upgraded in the same roll.
Moose (Deep North)
Moose uses the standard Tameable/Procreation components, so star upgrades apply to calves and carry over when they grow up.
Server-Side Control
Configuration is locked by default and synced from the server using embedded ServerSync. Clients cannot change settings unless the server allows it.
Breeding Limits (On by Default)
Configurable population cap per species. When enabled, breeding stops when the species limit is reached nearby. Supports Boars, Wolves, Lox, Chickens, Moose, and Asksvin.
Search Radius
Per-species control over how far the mod checks for nearby creatures when counting population and finding mates. Both the population check range and partner check range can be configured independently per species.
Console Commands
| Command | Description |
|---|---|
breeding_info |
Display mod status and current configuration |
breeding_simulate [count] |
Simulate breeding rolls (default 100) |
breeding_debug |
Toggle debug logging on/off |
Configuration
A configuration file is generated at BepInEx/config/DMT.breedingupgrades.cfg after the first launch.
| Section | Setting | Default | Description |
|---|---|---|---|
| General | Lock Configuration | On | Lock config to server admins only |
| General | Enable Mod | On | Master toggle for mod functionality |
| Breeding | Upgrade Chance | 5.0% | Percentage chance for offspring to gain +1 star |
| Breeding | Max Star Level | 2 | Maximum star level for offspring (0-10). Values above 2 require CLLC or similar mod |
| Breeding Limits | Enable Breeding Limit | On | Enable custom population cap per species |
| Breeding Limits | Max Boars | 5 | Max boars nearby before breeding stops (3-20) |
| Breeding Limits | Max Wolves | 5 | Max wolves nearby before breeding stops (3-20) |
| Breeding Limits | Max Lox | 5 | Max lox nearby before breeding stops (3-20) |
| Breeding Limits | Max Chickens | 5 | Max chickens nearby before breeding stops (3-20) |
| Breeding Limits | Max Moose | 5 | Max moose nearby before breeding stops (3-20) |
| Breeding Limits | Max Asksvin | 5 | Max asksvin nearby before breeding stops (3-20) |
| Search Radius | Population Check Range - Boar | 20 | Radius (m) to count nearby boars for population cap (5-50, vanilla 10) |
| Search Radius | Population Check Range - Wolf | 20 | Radius (m) to count nearby wolves for population cap (5-50, vanilla 10) |
| Search Radius | Population Check Range - Lox | 20 | Radius (m) to count nearby lox for population cap (5-50, vanilla 10) |
| Search Radius | Population Check Range - Chicken | 20 | Radius (m) to count nearby chickens for population cap (5-50, vanilla 10) |
| Search Radius | Population Check Range - Moose | 20 | Radius (m) to count nearby moose for population cap (5-50, vanilla 10) |
| Search Radius | Population Check Range - Asksvin | 20 | Radius (m) to count nearby asksvin for population cap (5-50, vanilla 10) |
| Search Radius | Partner Check Range - Boar | 6 | Radius (m) to find a partner for boars (1-15, vanilla 3) |
| Search Radius | Partner Check Range - Wolf | 6 | Radius (m) to find a partner for wolves (1-15, vanilla 3) |
| Search Radius | Partner Check Range - Lox | 6 | Radius (m) to find a partner for lox (1-15, vanilla 3) |
| Search Radius | Partner Check Range - Chicken | 6 | Radius (m) to find a partner for chickens (1-15, vanilla 3) |
| Search Radius | Partner Check Range - Moose | 6 | Radius (m) to find a partner for moose (1-15, vanilla 3) |
| Search Radius | Partner Check Range - Asksvin | 6 | Radius (m) to find a partner for asksvin (1-15, vanilla 3) |
| Debug | Enable Debug Logging | Off | Verbose logging for troubleshooting (not synced) |
Note: Max Star Level above 2 requires CLLC or a similar creature level mod. Without it, upgrades will cap at 2 stars (vanilla limit).
Compatibility
Creature Level Mods
- CLLC (CreatureLevelAndLootControl) - Did not check with the latest updates.
- Star Level Systems - Was not compatible in the past, and I haven't tested, because I don't use it.
Creature Mods
- Moose (Deep North) - Fully supported. Moose uses standard Tameable/Procreation components.
- Therzie's Monstrum - Used to work in the past. Haven't tested, because I don't use it.
- Should work with all mods that add standard tamable creatures or eggs.
Installation
- Install BepInEx
- Download and extract
BreedingUpgrades.dllinto yourBepInEx/plugins/folder - Launch the game to generate the config file
Future Plans
Mutation System
Rare traits (speed, health, damage) beyond stars. Creatures can inherit mutations from parents with configurable chance per trait.
Credits
- Original mod by Dumba (Discord: dumba7435)
- ServerSync library by Blitz
Buy Me a Coffee
If you enjoy this mod, consider buying me a coffee:
Changelog
1.0.5
- Added per-species search radius configuration (Population Check Range and Partner Check Range)
- Updated to latest standalone ServerSync (single file, compression, fragmentation)
- Expanded
breeding_infoconsole command to display all config parameters
1.0.4
- Added configurable breeding limits per species (Boars, Wolves, Lox, Chickens, Moose, Asksvin)
- Switched config sync to embedded ServerSync (v1.0.12)
- Breeding limits now enabled by default, max range changed to 3-20
- Cleaned the informative part of the mod
1.0.3
- Bumped BepInExPack dependency to 5.4.2350
- Confirmed Moose (Deep North) support
- No functional changes - patch targets verified compatible with 1.0.12
1.0.2
- Improved egg upgrade reliability when multiple animals breed at the same time
- Enhanced CLLC detection
- Added console commands:
breeding_info,breeding_simulate,breeding_debug - Added configuration validation
- Reorganized code for better maintainability
1.0.1
- Added automatic detection for CLLC (CreatureLevelAndLootControl)
- Fixed config incompatibility that sometimes caused upgrade failures
- Updated config descriptions with compatibility information
- Documented Star Level Systems incompatibility
1.0.0
- Initial release
- Added ServerSync for config enforcement
