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Spell Engine Extension (RPG Series Tweaks)
This is an extension to the Spell Engine mod by Daedelus. On its own it changes nothing in the game, but mod and data pack authors have more possibilities when designing spells.
Features include:
- Limiting casting with individual items depending on the hand they are held in
- Health cost for spells
- Mana cost for spells (using Mana Attributes)
- Stamina cost for spells (using Stamina Attributes)
- 3 generic spell schools (melee, ranged and magic)
- 9 entity attributes that customize cast spells (eg. projectile count, bounce amount, etc.)
- various config options to customize the spell hotbar
- and a few more little (and optional) tweaks
Detailed information can be found here.
How to Install Spell Engine Extension (RPG Series Tweaks) (Mod)
Spell Engine Extension (RPG Series Tweaks) by TheRedBrain is verified for Fabric across Minecraft versions 1.20.1, 1.21.1 (latest release: 2.17.2, file size: 160 KB). Follow the steps below to install it safely from ModCraft.tv:
- Click the Download button above and select your Minecraft version (1.20.1, 1.21.1) and platform (Fabric).
- Make sure you have the compatible loader or environment installed for Fabric.
- Move the downloaded Spell Engine Extension (RPG Series Tweaks) file into your Minecraft
.minecraft/modsfolder and launch the game.
All Versions
+ Add Version| Name | Game version | Platforms | Published | Downloads | Actions |
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2.17.0
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2.16.2
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2.16.1
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2.16.0
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2.15.1
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2.15.0
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2.14.0
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2.13.0
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2.12.0
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2.11.2
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2.11.1
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2.10.2
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1.3.1
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2.7.1
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1.1.2
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1.0.0
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[2.17.2] spellengine-extension 2.17.2
by TheRedBrain on Sep 29, 2026
Download
# 2.17.2
This version is marked as compatible with future versions of Spell Engine. SEE has become much more stable in recent updates, so I feel confident in doing this. Larger SE updates will certainly require a SEE update, but this should reduce the amount of "version bump updates" :D
- now works with Spell Engine 1.10.9+
This version is marked as compatible with future versions of Spell Engine. SEE has become much more stable in recent updates, so I feel confident in doing this. Larger SE updates will certainly require a SEE update, but this should reduce the amount of "version bump updates" :D
[2.17.1] spellengine-extension 2.17.1
by TheRedBrain on Sep 29, 2026
Download
# 2.17.1
- now works with Spell Engine 1.10.8
[2.17.0] 2.17.0
by TheRedBrain on Sep 18, 2026
Download
# 2.17.0
## Additions
## Technical
- now works with Spell Engine 1.10.6
## Additions
- added channeling status effect cost, using the existing custom status effect cost and the new boolean field "apply_channeling_effect_cost" added to 'spell.cost'
## Technical
- moved several registered features out of the main class, including:
- "spellengineextension:provide_spells" enchantment entity effect
- "spellengineextension:spell_container_predicate" data component predicate
- "spellengineextension:has_conditional_spell_container" data component
[2.16.2] 2.16.2
by TheRedBrain on Aug 11, 2026
Download
# 2.16.2
- now works with Spell Engine 1.9.16
[2.16.1] 2.16.1
by TheRedBrain on Jul 29, 2026
Download
# 2.16.1
- now works with Spell Engine 1.9.14
[2.16.0] 2.16.0
by TheRedBrain on Mar 25, 2026
Download
# 2.16.0
## Changes
## Fixes
- now works with Spell Engine 1.9.9
## Changes
- removed the server config option to disable the auto swap feature (this feature was removed from Spell Engine)
- spell modifiers can now remove the "custom_effect_cost" of a spell, if the "replaced_effect_cost_id" field is set to an empty string.
- re-enabled the "replaced_decrement_effect_cost_amount" Spell.Modifier field. It's default is now -2, which means the modifier is ignored. Values of -1 and above replace the "decrement_effect_cost_amount" of the modified spell. If multiple modifiers are applied, only the last one counts.
## Fixes
- fixed issues with some spell hotbar display options
- fixed an issue where the built-in compat data pack for the RPG Series mods did not recognise staff/wand weapon skills
[2.15.1] 2.15.1
by TheRedBrain on Mar 11, 2026
Download
# 2.15.1
## Fixes
## Fixes
- fixed crash when casting modified spells
- temporarily disabled the "replaced_decrement_effect_cost_amount" Spell.Modifier field. This feature is currently not working as intended and needs a complete redesign, which requires more time than I have right now.
[2.15.0] 2.15.0
by TheRedBrain on Mar 11, 2026
Download
# 2.15.0
## Changes
- now works with Spell Engine 1.9.8
## Changes
- tweaked some default values of the client config
- changed "spellengineextension:provide_spells" enchantment effect to apply different spell lists depending on the enchantment level. If the level is higher than the amount of lists defined, the last list is used.
[2.14.0] 2.14.0
by TheRedBrain on Mar 05, 2026
Download
# 2.14.0
## Additions
## Technical
- now works with Spell Engine 1.9.5
## Additions
- added "spellengineextension:provide_spells" enchantment effect
- added server config options to individually toggle position and orientation locking for movement locking spell casting.
- added client config option 'should_spell_hotbar_use_key_replace_first_number_slot'. If set to 'false' all 9 number slots of the spell hotbar are used, even if the 'use key' slot is also used.
## Technical
- made huge progress in making the mod easier to maintain. Thanks to new events added by Spell Engine, several mixins could be removed. Other mixins were modernized to be much more robust.
[2.13.0] 2.13.0
by TheRedBrain on Mar 01, 2026
Download
# 2.13.0
## Additions
## Changes
- now works with Spell Engine 1.9.0
## Additions
- added a built-in data pack that enables SSE mechanics for the RPG Series content mods
## Changes
- removed the "spellengineextension:proxy_pool" data component. This mechanic is now supported by vanilla Spell Engine via the reworked "spell_engine:spell_container" data component.
- changed default values of some config settings
[2.12.0] 2.12.0
by TheRedBrain on Jan 23, 2026
Download
# 2.12.0
## Additions
## Changes
- now works with Spell Engine 1.8.19
## Additions
- added "spellengineextension:spell_container_predicate" data component predicate
## Changes
- reworked the ProvidesSpell status effect API. It now optionally provides spells based on the effect amplifier.
[2.11.2] 2.11.2
by TheRedBrain on Dec 10, 2025
Download
# 2.11.2
- now works with Spell Engine 1.8.16
[2.11.1] 2.11.1
by TheRedBrain on Nov 01, 2025
Download
# 2.11.1
- now works with Spell Engine 1.8.10
[2.11.0] 2.11.0
by TheRedBrain on Oct 04, 2025
Download
# 2.11.0
- now works with Spell Engine 1.8.2
- added "prevent_casting_of_all_spells" boolean field to the "spellengineextension:has_conditional_spell_container" item component
- added "fall_back_spell_ids" list to the "spellengineextension:has_conditional_spell_container" item component
- added client config options to disable the "show details" tooltip hint for spell containers
- added optional integration for "Attack Range Attribute"
- health/mana/stamina spell costs are no longer checked/applied for players in creative mode
- bumped Mixin Squared version, hopefully fixing crashes when used with Sinytra Connector
- fixed custom spell cost tooltips
[2.10.2] 2.10.2
by TheRedBrain on Sep 15, 2025
Download
# 2.10.2
- now works with Spell Engine 1.7.3
- fixed "spellengineextension:has_conditional_spell_container" integration with RPG Inventory
