[bombcar]

Factorio is interesting because it is a deterministic simulation of all the entities (this is how multiplayer works; they're all running the same simulation and only passing "commands").

RAM speed is often the limiting "factor"(io) as to how fast the simulation can run or how large you can build.

[hlandau]

This is a very common way to handle multiplayer for RTS-style games. The inputs of the computation are the same, and the computation to update the game state is deterministic, so only the inputs are needed by every client. The disadvantage is if the logic deviates even slightly due to a bug you get a desync. If using floats I could also imagine there being issues with IEEE 754 architectures versus non-IEEE 754 architectures.