Add a ScreenState for a demo game vs a non-demo game

[danbuis]

Requirements

A demo has a specific pre-built list/deployment. A real game will not, we need a different logic flow for those.

Potential Solutions

If you have some ideas, toss them in here. They do not need to be fleshed out or even correct.

Potential Tasks

What does it take to call this issue complete?

• [ ] Write new unit tests
• [ ] Pass all unit tests
• [ ] DefDone: How can this be considered done?
• [ ] Other?