$100 is pocket change. Nose would need something in the ballpark of $25,000 to $50,000+ for negotiation to license Source Engine so most of the items he used from Valve games can be used.
well i mean epic provides unreal engine publishing free for the most part unless it is using only unreal engine assets
The game uses unreal engine 5, not source engine.
The game also uses Valve assets for the time being.
Ok, rich person.