To be clear:

Open Game Guardian inside the Parallel Space environment.

local selected = gg.choice(choices, nil, "Parallel Space Toolkit")

: Launch GameGuardian from within the Parallel Space interface first, then launch the game.

Parallel Space Lite uses a technology called Virtual Machine Monitor (VMM) . It runs a mini-Android OS inside an app. When you install GameGuardian inside Parallel Space Lite, the game you are hacking also runs inside that same virtual space.