"Two-up" is a traditional game which is true-blue Australian, invented in old Australia, and allowed to played LEGALLY in public only on special days, such as Anzacs day public holiday, since it's actually gambling...Of, course you can gamble and play it any time in an Australian casino.

A smooth area of 3 metres diameter is used with any number of players participating. Here's a few terminology used in the game:

KIP : Piece of wood on which the pennies (coins) are placed for spinning
RINGER : Person in charge of the game
SPINNER : Player spinning the coins
COCKATOO : Keeps a lookout for the "Law" aka Police !

The RINGER will call for the "SPINNER" who will place a bet with the "BOXER". When this is set, side bets may be made, for either Heads or Tails. The "RINGER" will then call "Come in Spinner", the "SPINNER" will then walk into the centre of the RING and tosses the coins upwards.

If the coins land with 2 Heads facing UP, it is called "HEADS". 2 Tails is called "TAILED THEM", and when one of each is showing, then it is "ODDS". The coins must be tossed until a result is obtained.

The game is for the "SPINNER" to spin as many pairs of "HEADS" as possible. When 2 Tails are showing, the "SPINNER" passes the "KIP" to another person.The modern game is now played with three coins thus giving a quicker result i.e. 2 HEADS or 2 TAILS.  Did you get that? LOL

Thomas... sssshhhhhhhhh!    

That's the tourist version. The 'fair dinkum' version goes like this:

"Two-up" is played at any time a group of blokes feel like a bit of a gamble, usually alcohol induced. "Two-up" is played anywhere out of sight, down a laneway, at the back of a shearing shed after work, or behind the pub, most frequently on Anzac Day. Only yuppies would use a kip, most blokes just throw the coins up with their hand. I've never heard of the 3 coin version, must be just in the Casinos for the tourists and yuppies. Side bets (as Thomas explains) are laid on the ground in front of the players using the honesty system. A "cuckatoo" (lookout) is usually situated nearby whose job is to alert the players if any police come snooping.

If you'd like to see a game of "Two-up" played watch the Aussie movie "The Sundowners" with Robert Mitchum and Deborah Kerr (why they didn't use Aussies I'll never know).