Yes, Loom has their own Zombie battleground game that already runs on their system.
And Loom is just one project that is building stuff like this. Then there's FunFair for gambling, gaming on their platform is same as in any normal gambling site. You see, Ethereum itself as a base layer is still slow and costs too much, but anything can be built on top of it and people are doing just that. Probably many more just related to gaming, but one human can't keep up with it.
So these people who are complaining about painfully slow experience, have used games that have used Eth's base layer. They should give Funfair a try or Zombie battleground, cheap and blazing fast.
"So why waiting years for something that is already here."
I've read about how certain accounts have been taken control over on EOS, after that I haven't really followed it. That shouldn't be possible on a blockchain. If you know about it more, could you explain the situation? Also Steem isn't smart contract platform, yet at least. I'm following some people doing some creative stuff with it but it can't compare. Tron I really don't know about, all I've heard it's whitepaper was mostly just copypasted? How do they achieve fast transactions?
RE: Steem Monsters races past EOS knights on stateofthedapps.com