Nice, but needs some tweaking.
This is a very cool game. It is pretty simple when it comes to an RTS, but it has good gameplay and is a solid foundation for more. The graphics are okay, the sounds are good, and the game isn't too long. Overall it's really well done.
Things I would like to see:
1. Add a skip button to the starting sequence. After the first time through it gets painful to wait through. (Yes, I'm impatient)
2. Put more inclusive instuctions in the game itself. I didn't bother to read the "Author's Notes" the first few times I played and had no idea I could scroll around the playfield. I know, I know. There is a link to more complete instructions on a website. Still, This is info it would make sense to include within the game itself (a failsafe in case your site goes down). Besides, I'm sure you can fit "Use arrow keys to scroll." in the game somewhere.
2.1. As an aside, since I didn't realize I could scroll around, I built lots of buildings on top of one another because I was out of real estate. That really doesn't make sense and probably shouldn't be allowed.
3. Change the goal of the game. It is NOT a 5 minute game. Even if the timer did count down the seconds (which it doesn't, unless minutes suddenly have 99 seconds in them), the game can lag and the timer no longer counts by seconds. Change "minutes" to some new term like "Sols" or something so that it is technically accurate.
4. It would be nice to have some idea of how much material, food, and energy new construction will use up or produce BEFORE you build it. Perhaps the buttons to build new items could be ghosted or otherwise inaccessible when you don't have the right amount of resources to build the item.
5. A little more animation for the buildings would be great. For instance, the ranch looks neat, but it looks "dead" because nothing is going on in it. Same for the quary. Maybe add some little dots (people) or machinery moving around to give it some action. If the player powers down the building, the animation could stop.
6. Finally, (and this is a biggie) it would be great to have a few more building options. I know how hard it is to build a good RTS where everything is balanced, because I've done it. I see you took a simpler approach by only adding a 5 distinct building types. The addition of one or two more building types would really add a lot to this game. Or how about different terrain types so that some buildings would work better in certain areas?
Anyhow, I really enjoyed this game. I found the little things noted above somewhat annoying, but overall, this is solid work. Nicely done.