---
title: X4 Lua environment events
summary: 2 API entries with return and parameter types.
section: reference
kind: guide
status: reference
updated: 2026-10-26
tags: ["API","X4"]
sources: ["https://wiki.egosoft.com/X4%20Foundations%20Wiki/Modding%20Support/","https://www.lua.org/manual/5.1/manual.html","https://luajit.org/ext_ffi_api.html"]
---
## Contents

[Types and methods](wiki:types). Parameter and result types refer to the stated X4 layer; unknown contracts are explicit.

## Lua environment events

| Call / event | Returns |
| --- | --- |
| [gameSaved](wiki:api-event-gamesaved-984171bf) | event data |
| [onUpdate](wiki:api-event-onupdate-0e377c56) | event data |