A key thing in most RTS games is managing your economy. In Starcraft you have workers collect minerals and gas that you spend on various things.
I decided to run some tests to see how many workers I should put to work. I started up a solo game and did nothing but add workers to the mineral line. I then went back to the replay and looked at the income rate as I added workers. It turns out that 3 workers per mineral node is saturated. I was able to gain just a slightly higher rate with a few more than that. When I see it saturate, workers will move from node to node looking for a spot. I highlighted one guy and saw him make several trips up and down the line trying to get in.
Diminished returns start in after you get 2 workers for each node. You do get more minerals per minute with 3 workers, adding a 3rd worker does not increase collection by 50% over 2 workers. If 1 worker is 100% production, 2 workers gives us 200%, and the 3 gives us 255%. With 4 workers I got to around 270%. I pushed it all the way up to 25 workers per node and did not gain much more than that 270%.
What does this information tell us? With the 8 mineral nodes you start with it is critical to get your first 16 workers and you will still get value from your workers up to 24. But the cool thing that jumped out to me is that if you expand you should move 1/2 your workers to the new location (if its safe to do). If you only had 24 workers in your first location and moved 1/2 to the new spot with out making new ones. Your production will increase from 250% to 300%. That is a 20% increase.
You can take that one step further and keep up worker production knowing that you will move 1/2 to a new location. Or move 16 of your workers to the expansion and then replenish your supply in the main base. This gets more out of that location sooner in case it gets taken away (just save your workers). It also makes your minerals last longer. The one in your main base tends to be more protected so it lasting longer is never a bad thing.
How do you tell how many workers you have? Select them then take a quick look at how many were selected. After you count it out once or twice you will be able to just take a quick look at it and know.
And what about the gas collectors? The magic number is 3. They stack up outside when there are more than 3.
Something else I realized is that the rich mineral nodes have 6 nodes instead of 8. You get 7 minerals per trip instead of 5. But with fewer nodes you don’t gain all that much. 12 workers bring 84 minerals vs 16 workers bringing 80. Although it takes 6 less workers to saturate it the mineral collection of a saturated rich mineral is not that much more than a normal one. Time to saturation is much faster. It takes 17 sec to produce a worker so it will saturate about 2 min before a normal location.


