There's this nasty guy Thief Ship that randomly (although I really feel like he comes every time I have any decent amount of money) pops up and sucks all f your money. MonroeWorld says it can be disabled:
There are at least three ships that seemingly appear randomly during the game - the HURRY UP ship, the LAZER SHIP, and the ever-dreaded THIEF SHIP (which can actually be disabled in configuration).
But how can it be done? I haven't found anything on the site, in docs or in game configuration (both the normal in-game screen or the one you get to by holding Fire during startup).
This alien really breaks the game for me.