Hi and thanks for reading this, A quick question, I have only just heard of garrys mod Tbh and i was looking at the parkour mod for it, Question is do i need to buy Gmod and install it to try the parkour mod out or can i try it before shelling out on the Gmod game? Thanks
Kind regards

You need to buy Gmod itself first to use the gamemode. It’s only $10 and totally worth it.

i would also recommend getting the orange box and counter strike:source they integrate into gmod and alot off addons use content from counter strike.