Dice2win is a simple and easy to use decentralized gambling website that is very popular right now with over 586 Ether bet in just the last 24 hours. There are currently just 4 games on the website which are Coin Flip, Roll a Dice, Two Dice, and Etheroll. All you have to do in log in with Metamask with your Ether and you are ready to gamble.
If you choose to play Coin Flip you have a 50-50 chance and the winning bet will pay 1.98x your original bet.
Roll A Dice is where you bet on dice rolls, and the winning bet pays up to 5.94x depending on which numbers you choose.
Two Dice is where you bet on the sum of the dice rolled and you can win up to 35.64x depending on how many outcomes you choose.
Etheroll is the most interesting to me right now because you get to decide your chances of winning before you place a bet. You can slide the bar between a 1% win chance and a 97% win chance before you place your bet. The lower percentage chances of winning the larger the payout.
For example, at a 1% chance of winning you will have a 99.0x payout. At a 97% chance of winning you will have a 1.02x payout.
Every bet on the platform has a 1% transaction fee and sends 0.001 ETH to the jackpot which is about ~$0.22 right now.
Dice2win is open-sourced smart contract and they don't require any signups or initial deposits to use their platform. You can start and place a bet with as little as 0.01 Ether. They also have the game history of every bet taking place and it is updated every few minutes. I haven't tried out this website yet, but I probably will soon.