Disclaimer: I've been following along with the team for a few years now and definitely am a fan, so I might be a little biased, but have a look for yourself!
The people who made Ethercrash have recently released Etherdice, a dice-betting game provably fair using the same secret-server-seed system that Crash uses. House edge is around ~1% after player bonuses.
The super cool thing is that, like crash, you can invest in the house, become part of the bankroll, and collect dividends over time as the house wins money. As you play, you also earn "tokens", which are separate from your normal (and invested) balance and entitle you to daily dividends. There's also a weekly contest based off of your total amount wagered in the past week.
It only lets you withdraw in ETHOS. How can you change it back to ETH?