19- XP & Level System with JSON Save | Unity RPG Tutorial
Welcome to Lesson 19 of the complete Unity 3D RPG Course!
In this episode, we implement one of the most important progression mechanics in any RPG game: the Experience (XP) and Level System, fully integrated with JSON save and load.
This is the system that makes combat meaningful. Enemies are no longer just obstacles — they become a source of growth, power, and long-term progression.
What You Build in This Lesson
In this tutorial, you create a full XP and level system where:
Enemies reward the player with experience points
XP accumulates over time
The player levels up when XP reaches a threshold
Required XP increases each level
Player progress is saved using JSON
Progress loads correctly when the game restarts
This system is flexible, readable, and easy to expand.
Saving & Loading with JSON
A major part of this lesson is saving player progression using JSON, which is:
Human-readable
Easy to debug
Lightweight
Platform-friendly
You save:
Current level
Current XP
Required XP for next level
When the game loads, the data is restored exactly as it was — no lost progress, no reset levels.
This makes your game feel reliable and professional.
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