Don't apologize for your ridiculous canons, we're all silly here!

One of the first things he will notice is that the simulation is, without the proper filters in place, just code. So, yes- He will basically see The Matrix! However, it also almost appears to be alive or organic in some ways, ever adapting and adjusting.

The simulation will also appear to be an amalgamation of scattered, miscellaneous code rather than one seamless design. There are several inputs contributing to the overall 'program' that runs the simulation. Some are more active than others but it will vary.