Econ Lab Free is a small, free (MIT) Godot 4 editor plugin that adds an Econ Lab Free bottom panel with two tools.

XP Curve tab

• Curve types: Linear, Power, Exponential, or a custom formula (Godot Expression using L, base, growth, exponent). Formula errors are shown, not hidden.
• Live table (level, XP to next, total XP, hours per level, total hours) and a line chart.
• Play-time estimate from XP-per-hour and its growth per level ("max level in N h of play").
• Save / load the curve as a .tres resource (ELFXpCurve), export the table as CSV.
• Bake an ELFLevelTable resource for runtime use: level_for_xp(xp), max_level().

Google Sheets tab (read only)

• Paste a Google Sheets link (/edit#gid=..., export?format=csv or a "Publish to web" CSV link), click Pull sheet, preview the rows, then Save as CSV into your project.
• No Google login, no OAuth, no API key. The plugin downloads the sheet's public CSV export directly from Google.
• Clear messages for private sheets, wrong links and network errors. UTF-8 text, quoted commas, escaped quotes and multi-line cells are handled.
• The sheet must be shared as Anyone with the link can view, or published via File > Share > Publish to web > CSV.

Install

1. Copy addons/econ_lab_free/ into your project's addons/ folder (only that folder is needed), or install it from the AssetLib tab.
2. Project > Project Settings > Plugins, then enable Econ Lab Free.
3. Open the Econ Lab Free panel at the bottom of the editor.

Requires Godot 4.2 or newer.

Tested

Headless test suite (32 checks) passes on Godot 4.2.2, 4.3 and 4.4.1. Not tested on Godot 3 (not supported) or on non-Linux editors.

Paid version

The paid Econ Lab (separate plugin) adds a multi-player currency inflation simulator, upgrade ROI table, CSV import of economy configs, and pushing results back to Google Sheets via Apps Script (beta): https://moygoldenage.itch.io/econ-lab?ref=assetlib

Made by Moy. Built with AI assistance.