I like how every time I don't have an item, every other customer wants it. When I finally invest the time in researching it and producing it, the customers want something else that I have to research two other items in order to research the one they want.
1) Don't buy any upgrades until level 10.
2) Dump your bonus points into interest until it's 20%, then heatseakers, inferno, and EMP.
3) Every few levels upgrade energy infuser and upgrade base.
An alright game. I don't like how the game keeps prices at such a ridiculously high price of 70+ for such a long time, reduces how much time you have each round and makes every port a risk near the end and expects you to succeed.