Sigma Derby is an electro-mechanical horse race used for gambling manufactured by Japanese manufacturer Sigma Game Inc. and introduced in 1985.
The house has roughly a 10-20% advantage, depending on the machine.
[2] After the closing of the New Frontier Hotel and Casino, there’s only one remaining Sigma Derby machine in Las Vegas.
Two new versions of a racing game similar to Sigma Derby made their debut at the G2E Conference in Las Vegas, NV in 2015.
One was a prototype game called "Classic Derby," made by manufacturing company VSR Industries.