The randomness in games currently available boils down to picking from a set of very large numbers and executing a limited number of code paths. That is to say,

The randomness in games currently available boils down to picking from a set of very large numbers and executing a limited number of code paths. That is to say, there are no non-deterministic video games, because all outcomes must be programmed. A problem that can crop up with emulators is a lack of random seed values between runs, leading to, for example, a dungeon crawler with the same loot every time.