Made a start

I've decided on a concept. It will be a peaceful RTS-style game based around building a lunar colony.

Resources: water, silica, metal ore, sunlight (for solar power)

Fixed units: habitat, smelter (turns ore into metal and silica into glass), factory, farm, solar panel, hydrolysis plant (to produce oxygen from water), transport tube

Mobile units: worker, rover

I started on the coding last night, and I made a bit of artwork today:

A loon
A loon (any resemblance to a Kerbal is entirely coincidental).