At the start of the game, when I'm not focused, I do either one of two things:
Forget to start researching
Forget to build anything
it cost me a game.
On the sphearworld:
Militia: 3200 for 64 billion
Number of troops needed to take sphearworld in one fell swoop: 460 Large Troops equipped with 2 sheild generators and 3-4 ground cannons
Causes an access violation.