Setting Expectations: What Isn’t in MX’s Core Book?
You may feel disappointed if you come to Mission X hoping for a generic “anything goes” toolkit. GURPS Third and Fourth Editions offer that, but they had my lifetime to get there. Players who want a complete, self-contained game—create an operator, grab their gear, and kick in doors with their squad—can get to the table in under an hour. This is exactly what the Introduction promises—and exactly what the rest of the core book delivers.