Seek the best record and construction method of classic DOS game-colonial plan without using bugs

If I don't use bugs, I can only reach the normal level. 1600 points.

My strategy is, firstly, to build rocket turrets to defend the enemy, and to upgrade metal technology to the highest level, so as to prepare for future scientific and technological research. It's a bit difficult to destroy the enemy, but I can do it every time.

At the second level, industrial technology rose to the highest level and made money. Have the remaining time to develop military science and technology.

The third level, continue to develop military industry, until the fourth level, the civil affairs department has been sending people to receive it.

Because our scientific research and intermediate level are extremely high at the first level, the enemy can't catch up with us (every level will destroy their science and technology center), and it is easy to defeat the enemy with poor strength. Economically, I think people should control the population living rate at about 65%~75%, so that the environmental index will be high.

Finally, don't forget to set up education manually after the establishment of the education center (it is fast to do scientific research at the highest education level ~)