
Arceus X is a Roblox script executor that performs LuaU script injection on Android, iOS, and Windows. It is a cross-platform injector that loads custom Lua scripts into a running Roblox client, giving users a mobile-capable and desktop-capable script execution environment. The project is associated with the SPDM Team and ships in builds labeled Arceus X Neo and V5.

The executor focuses on LuaU execution and general script execution for user-supplied code. Main functional modules include:
The interface uses dynamic transitions and fluid animations, and exposes customizable panels for managing loaded scripts.
The tool targets three environments: Android (APK), iOS (IPA), and Windows. Android is the primary distribution path, with builds packaged as an APK, while the Windows build covers PC users and iOS covers iPhone and iPad clients. Version labeling is explicit, with releases such as Neo 2.2.5 and V5 1.5.1 mapped to specific platforms. Because behavior can differ between mobile and desktop, users should match the download to their device and the current Roblox client version. Injection depends on a working build that aligns with the active Roblox release.
Roblox pushes frequent client patches, and any executor can break after a platform update until a matching build is published. Arceus X development emphasizes a fast update cycle to restore injection after patches. Version numbers are stated per release, which helps users confirm they are running a current build rather than an outdated one. When injection fails, the common cause is a version mismatch between the installed build and the live Roblox client, resolved by installing the latest labeled release.
Games frequently referenced in this context include Blox Fruits, Pet Simulator X, and Da Hood, which are common targets for script execution. Compatibility with any specific game depends on the script used and the current build state.