Stat Upgrades with Increasing Costs (MV Plugin Tips & Tricks)

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For those who wanted to do Stat Upgrades in the past with increasing JP costs, here’s how you can accomplish this mechanic in RPG Maker MV!

Required Plugins

The following plugin(s) is required to create this Tips & Tricks effect:

For help on how to install plugins, click here.

For help on how to update plugins, click here.


This is a Tips & Tricks effect created for RPG Maker MV. Tips & Tricks are not to be confused with plugins. Instead, they are usually customized code created for the sake of producing unique features/effects that do not require an entire plugin to do.

Yanfly Engine Plugins

This Tips & Tricks effect is made possible due to the Yanfly Engine Plugins library.

Click here if you want to help support Team Yanfly on Patreon.


Follow video instructions.

You can grab the copy/paste code here:

Insert the following code into your upgrade skill’s notebox. Change the values to fit your game’s settings.
<Learn Cost Eval>
// Set the param ID of the stat you wish to adjust.
var id = 0;
// Increase the parameter by this amount.
user._paramPlus[id] += 200;
// Adjust the number of times upgraded by 1.
user._upgradeParam[id] += 1;
// Make the user forget the skill.
// Refresh the user.
</Learn Cost Eval>

<Custom Learn JP Cost>
// Set the param ID of the stat you wish to adjust.
var id = 0;
// Default the user's upgrade parameter times to empty.
user._upgradeParam = user._upgradeParam || [];
user._upgradeParam[id] = user._upgradeParam[id] || 0;
// Adjust the cost of 
cost = user._upgradeParam[id] * 200;
</Custom Learn JP Cost>

<Custom Cost Display>
</Custom Cost Display>

<Hide in Battle>
Replace the values with these.
0 - MaxHP
1 - MaxMP
2 - ATK
3 - DEF
4 - MAT
5 - MDF
6 - AGI
7 - LUK