Quite fun! It is still just a demo, but it is still addictive. The lvl up orb system is a nice idea. You basically equip an orb, the XP red orbs enemies drop counts towards unlocking the effects of the orb equipped permanently (Like +10%HP + 20%Attack, etc.) so you keep getting stronger by defeating enemies. Even when you die, you keep the orbs bonus and XP progression.
Nice to see Kazuya's classic moves like 112, Hellswep, DF2, FF4 and his grabs as special attacks. You can combine these attacks to juggle opponents and do some nice combos. You can use the SP bar to do some supers like the famous EWGF and Devil Kazuya's laser. You can also use supers to combo. (if you have 3+ SP bars you can do 3 electrics one after another DORYA!!!)
The game is more slow paced compared to other OpenBoR games, but it's not necessarily a bad thing.
You will probably die early on and sent back to the over map, but don't worry, as I said you keep getting stronger. So you have to start the stage from the beginning but it will keep getting easier, so you will keep pushing further on the stages.
I'll keep an eye on this one to see how it progress. I recommend you try it.