BitDice is a cryptocurrency casino that accepts Bitcoin, Ethereum, Dogecoin, and Litecoin. They've developed a variety of blockchain-based casino games that are powered by smart contracts and are provably fair. BitDice also has a native CSNO token that pays holders dividends and gives them bonuses for playing

Wagerr is creating a blockchain for sports betting. Wagerr will be powered by the WGR token, and will use a blockchain-based platform to decrease betting fees and ensure fair and transparent bets on sporting events.
It will be a self regulating network with application specific smart contracts (ASSC) designed specifically for executing bets on real world sporting outcomes. The multi-tiered network will rely on Oracle Masternodes to execute contracts and will serve as consensus agents that will earn 50% of the trading fees. 2% of the fees will go towards development of the network and the other 48% will be destroyed.

Etheroll is an Ethereum-based dice game that is provably fair and cryptographically secure. Their dice game has a 1% house edge and is powered by a smart contract. Players place bets in Ether and can also purchase DICE tokens, which pay out dividends regularly.