If anything, I'd like to see graal be put on the Unreal engine, Not that Unity is bad, But typically when games get big and so on for say games like an MMORPG or something like Classic they begin to lag terribly(Atleast from my experience). Though Unity is no doubt probably still better than what Classic or probably any graal server has now. I'd feel the Unreal engine would probably do better for Graal's purposes. Considering things can be made much faster, games seem to work with far less lag than other engines. And among many other benefits like scripting isnt always needed. The only thing I think might detour graal is the fact you got to pay a small bit of your game makes over 4000 dollars a month. Other than that it's completely free. And they don't really take that much out