This is the RPG System: All-In-One, the only one you’re going to need, all features of a full RPG game in one Framework.
Fully Customizable, easy to Integrate and Multiplayer compatible!
Use one of the two pre-made examples (Top-Down | Third-Person) or implement it into your own Character, there is no restriction.

The developer describes the content as follows:
My asset is supposed to be a foundation, not a concrete block that cannot be changed

Showcase: Link
Discord: Link
Roadmap: Link
Documentation: Link

Successfully tested in UE5 and will be updated as soon as Epic allows so.
Disclaimer: The shown Environment (MultistoryDungeon) in the pictures/videos is NOT included!

Features:

• Multiplayer
• Damage System - Melee, Ranged, Physical/Magical, Elements, Defense, Flee, Block, Hit rate, Critical Chance...
• Dynamic Class System - Multi-Class, Base Stats, Stat Modifier, Skill Tree
• Skill System - Offensive, Passive, Buffs, Casting, Cooldown, Aoe, Single Target, Upgrades, Overheat mechanic, Modules to create own skills
• Skill Tree - Manage your Skills and gain Skill Points per level up
• Stat / Attack / Element Bonus - Scale your stats based on Item Level, Rarity and other parameters
• Leveling System - Each level up gives you Stat and Skill Points
• Spendable Stats - Increase your Stats by investing Stat Points
• Status Effects - Stacks, Stat/Element/Attack Bonuses, Debuffs, Damage over time and more
• Crowd Control - Freeze/Curse your enemy, change the behavior or anything else you have in mind!
• Inventory System - Equipment, Requirements(Class, Level..), Consumables, Stackable, Weight, Currencies and more
• Item Refinement - Upgrade your gear and make it more powerful! +1, +2, +3..
• Item Rarity - Uncommon, common, Legendary, Ancient.. add as many as you want and increase the Item Bonuses for each Rarity separately!
• Item Socket/Gem Slot - Add Sockets to your Item and add special items into it to make it more powerful!
• Drop System - Create loot crates, loot pools. Generate dozen varieties of one Item similar to other Popular ARPGs
• Interact System (Interface based) - Interact with any type of objects (Items, Doors, Treasures, NPC's..)
• Crafting - Combine or create new items
• Advanced AI - Highly Optimized, can use Skills, Stat Bonuses, Equip Items, Spawn Slaves(ads) etc.
• Custom Projectile Collision - Own Collision Method which runs up to 40% faster than traditional methods!
• PvP - (Toggleable) Battle with your friends for fun!
• Save System
• Widget Examples for all systems
• Top-Down Example
• Third-Person Example
• In-Editor Tutorials - Over 30+ Tutorials that guide you right away in the Editor! (More are coming)
• Chat support (Discord, Email) and optional TeamViewer(Desktop sharing) for verified buyers with special needs

Technical Details​

Number of Blueprints: 105, Structure: 66, Enum: 30, Widget: 40, Datatable: 8
Input: Gamepad, Keyboard + Mouse
Network Replicated: Yes
Supported Development Platforms:
Windows: Yes
Mac: Not Tested