1. Pixels and Quantization
In a computer, everything is made of discrete pixels. In "reality", everything is made of discrete atoms. In a computer, space is made of grid nodes. In "reality", space is quantized on the Plank length scale. In a computer, time exists as processing cycles. In "reality", time is quantized on the Plank time scale.
2. Null Processing and Empty Space
Null processing gives no result. Empty space looks like nothing. Null processing does require processing. Empty space has vacuum energy. Null processing can host other processing. Empty space is the medium of light.
3. Virtual Time and Physical Time
Virtual time is measured by processing events. Physical time is measured by atomic events. Virtual time varies with processing load. Physical time varies with speed and mass. Virtual time is a sequence of changing pixels. Physical time is a sequence of changes in position.
4. Virtual Load and Quantum Collapse
In a virtual space such as a computer game, only what you are looking at and can be seen onscreen at any given moment is actually loaded, everything off screen is not loaded. In physical space, atoms collapse into a definite state when you look at them. As far as we know, whatever is behind you isn't actually there until you turn around to look at it.
There's a great deal more similarities than this but a lot of it is a bit beyond my understanding. However it is plain to see that just about everything about how our reality works is based on the same principles as how a computer works. If it looks like a duck and quacks like a duck...well you get it. All that being said I think it's equally as likely to say that computers simply follow the same method as reality because they exist in reality. But it's still in intriguing thought.