The most common and most likely answer to this crossword clue is the 6 letter word BOULES
B
O
U
L
E
S
More clues leading to the result BOULES
Buddy explains!

The straight part
We know that "Game" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case game = boules.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BOULES mean?
BOULES noun- One of the bowls used in the French game of boules.
- A single-crystal ingot produced by synthetic means.
- A round loaf of bread.
- A round piece of dough.
- A through-sawn log with the slices restacked in the order and orientation they originally had in the log, usually with waney edges.
- A council of citizens in Ancient Greece
- Bowls; a game played with metal balls.
- A particularly decorative piece of brass or other material, used as inlay in furniture or other works.
- Furniture having ornamentation of this kind.