Even if he were serious on that Nexus stuff, I doubt he's tackling multiversing properly. I mean, at least start with the basics, like lucid dreaming or something with a bit more freedom than reality first. Or take it on mathematically, and do some calculations and such. I doubt games are a good starting ground. Maybe for sparking your imagination, but that's just about it. Getting bitten by a basilisk or staring into Medusa's eyes is also another place to start, or at least take an edge off.
I kind of feel bad for him... His idea could be done much better and it might even be possible to have it become something great. But he just has no ideas how to do anything about it correctly.
Kinda the same here. In a sense, much like myself, he'd probably do better as an "ideas guy". Got the imagination, but lacks the necessary skill levels in the necessary fields to make it more tangible. So, it's more like we're the 'irrational' imagination relative to the 'rational' applied/practical. In a sense, an engineer can make something cool, and we can make it look cool; or we can make something cool, and the engineer can make it work. Something like that.
So, imagination wants a ray gun of some sort, and the engineer can make a ray gun with what they know. Of course, reality and reason are still major limits in translation. If anything, it's more like a one-way street. So, no, no ray guns that can make money from nothing, nor your chicks for free.