Mac users are advised to install lua via Homebrew:
brew install lua
lua-mac takes folders of Lua binaries and wraps them in basic PKG installers that add lua, luac, and bin2c to PATH.
https://github.com/mcandre/lua-mac/blob/master/Lua-5.1.3-Intel.dmg?raw=true
https://github.com/mcandre/lua-mac/blob/master/Lua-5.1.3-PowerPC.dmg?raw=true
Binaries - LuaBinaries