Project Spark was a great experience, but also- let's not lie - it sucked when MS just pulled the plug.
My new project, http://www.angelbattles.com is an Ethereum DApp.
The code is all run on the ethereum blockchain, so no downtime. No company, microsoft or otherwise, can ever shut it down or take the cards away from my users.
Anyway, feel free to check it out if anyone is interested. Post your ETH addresses below and I will personally send you some of my good cards just for being from the old PS community.