What does the cryptic crossword clue "One follows game’s idol, for example: as universal as contrary (7,3)" mean?

The wordplay uses a reversal. SAUSAGE (synonym="SAUSAGE") + DOG (synonym="DOG") = SAUSAGEDOG The answer is SAUSAGEDOG.

One follows game’s idol, for example: as universal as contrary (7,3)

Guardian Cryptic #29541 | 3 Down | 2024-11-15 flower