gamer

A person who plays any kind of game.

[…] any dice-player, carder, tennis player, or other unlawful gamer.

These dice are the gamers' weapons […]

A person who plays any kind of game.

That the Parliament congratulates the online gamer, Harry Brewis, who is known by the handle HBomberGuy, […]

A country that's enriched the world with sushi, karaoke and manga, Japan has many devotees, especially among gamers and geeks.

A person who games the system.

Near-synonym: gamesman

[…] the real "takers" in this country are commercial gamers of the system who are only in it to swipe a fast buck from the common trust.

A gambler.

The gamer is farther from restoration even than the drunkard, because what he does he does in the light of sobriety and reason.