Wiktionary
n. {{context|idiomatic|almost always preceded by (term: the)|lang=en}} The essential element (needed to reach the principal goal or objective); the overall purpose.
Wikipedia
"Name of the Game" is the first single to originate from The Crystal Method's second studio album, Tweekend. Despite the massive popularity of the song, The Crystal Method almost never plays it live. The track features guitars by Tom Morello, vocals by Ryan "Ryu" Maginn, and scratching by DJ Swamp; it also contains samples from "Calling All Freaks"(1974) by Tina Dixon. The song enjoyed mainstream success as well as remixes by popular artists.
Name of the Game may refer to:
"Name of the Game" is the sixth track from power pop band Badfinger's 1971 album, Straight Up. The song was written by Pete Ham.
Usage examples of "name of the game".
For a while the name of the game at Guadalupe Mountains would be Cover Your Ass.
Makes you want to puke afterward, but the name of the game is getting the bastard to fess up.
At this stage, with no evidence on the table, the name of the game is publicity.