I guess you can say I always have a dream game in progress (production and playing simultaneously) in a sorta waking-dream format. Nothing can beat the power of a powerful biological processor, and a psychic computer; AKA, imagination and brain power.
You can say that much my artwork comes from this inner universe that is also augmented with this one in a unique manner which can produce some interesting results. Getting drunk or high enhances the experience.
A good summary of the inner universe is that it's the universe of ideas, ideas easily adapted and able to work together naturally, despite some unnatural forms they take. Considering how easy it would be to adapt to it, I nicknamed it "The Second Nature". You can say it's also populated by the egos of all other universes. Think of it as Second Life, except... good awesome. It's a more ultimate sandbox than this universe, and other good games that are also sandboxes. Only side-effect is that it's also more likely going to be the most dangerous, and even terrifying, yet most interesting place to be.
Procedural generation at it's best. Infinite worlds, weapons, ways to get things done, creatures... the list goes on. Basically imagine if everything, real or not, imagined yesterday, today, tomorrow, or never at all, all existed one way or another. One way or another, something will exist. On that note, some parts of this universe can also be described as "God on a real bad acid trip". It is, in fact, the ultimate melting pot game. Every genre, for every age, no limits, and countless challenges and collectibles. To each their own.
Best part about this is that it's already distributed as public domain and is freeware. Just free your mind.
There is a predecessor to "The Second Nature" however, it's called "Real Life". Compared to the other game, I heard "Real Life" is beyond Nintendo Hard, and at times, not as fun. Social networking isn't the best either, depending on how well your connections are.