The main purpose of 'The Game" is....

Rating: 8/10 (25 November 2017)

Spoilers Alert! "CRS ends up being an elaborate intervention company. Michael Douglas' character never confronted his father's suicide internally, which made him such an insufferable prick. The gift he got was the ability to accept it and move past it."
^Yep. The above quote from another post is what people whom dislike it are possibly missing, or can't/don't want to relate to. CRS are a highly specialized, covert, expensive but effective, psychological trauma therapy organization. The past trauma suffered has caused Douglas' character adopt an incredibly self centered, superior and uptight facade persona, this is a protective mechanism to concealed/deal with his past trauma. He is effectively broken down by CRS in order to see the, ultimately, ineffective protective false persona he's unconsciously adopted. From here he can re-build his true self and finally accept and move through the past trauma, just as his brother has. A brilliant film where the purpose isn't about the plausibility of the staged situations per se (although, all can be plausible if CRS are comprehensive and genius enough with back-up plans A-Z, which you assume they are), the purpose is achieving successful therapy for unresolved trauma hiding behind a protective false persona facade.