These are typically provided as .zip or .rar archives. You simply unzip the folder and run cube.exe directly; no installation or account login is usually required.
Always scan files from unofficial sources with updated antivirus software before running them. Setting Up Multiplayer cube-world-free-download-incl-multiplayer
Multiplayer in the Alpha version is peer-to-peer and requires manual configuration since there is no built-in server browser. How To Setup & Host A Cube World Alpha Multiplayer Server These are typically provided as
Fans on platforms like Reddit have created "Mega Collections" that include both the vanilla Alpha and modded versions (such as those without region locks). cube-world-free-download-incl-multiplayer