The most common and most likely answer to this crossword clue is the 7 letter word TOMBOLA
I've seen this crossword clue in The Daily Telegraph
T
O
M
B
O
L
A
More clues leading to the result TOMBOLA
- Much upset about mob breaking up lottery
- Drum roll to precede this lottery's result?
- Many turning up old doctor injected, chancy business
- Lamb too frisky for lottery at fete
- Fair lottery excited mob a lot
- Cat left snake trapped? It’s fair game
- Closed with maiden, cricketer we hear gets draw
- Game Boy’s a throwback
- Lob atom bomb? It’s a lottery
- Lottery money turns around heart of Humber area
Buddy explains!

The straight part
We know that "fair game" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fair game = tombola.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 TOMBOLA mean?
TOMBOLA noun- A lottery in which winning tickets are drawn from a revolving drum.