Shortly put: Great game, terrible tutorial.

Spacelords is a game with lots of technical depth that makes for a great challenging coop experience.
Sadly most are turned off by the fact the game explains almost none of these core mechanics.
If you know someone who plays the game, ask them to give you the run down on how to play, it'll be a lot less painful than learning yourself.

There isn't much to say about the game, When everything is good there is nothing to highlight.
and when it comes to flaws the game only really suffers from a few balancing issues, and the previously mentioned lack of a reasonable tutorial.

As a free to play game the monetary model is worth talking about. Especially since spacelords does that right as well. Only cosmetics are locked behind a paywall, which is lovely to see.
In game currency can be purchased, but the currency is so easy to earn that I wonder why anyone would ever bother.

At the end of the day it is a free game, download it and try it for yourself. probably watch some guides or something as well so you can actually get what is going on.