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.

DEOS Games is an EOS-based casino game operator. They are developing a range of casino games that will be provably fair and decentralized. Although users will be able to wager with bitcoin, DEOS token holders will have slightly better probabilities to win, and will also be able to cashout instantly.