It's true, I need to change the screenshots, I changed the economy in the last minutes and I already had everything else ready.
The concept of the most expensive alien is that you have to invest a lot in it by upgrading the stats and then no other unit can match it then.
I was planning to add co-op to the game so a second player could control the astronaut, but ran out of time.
Thank you for playing and for your feedback <3
Greetings!