There are no games like Secrets of Grindea. I've been yearning for a game like this for years. Simple graphics (pixel or not), low system requirements, good combat system with a variety of ways to build your character, aesthetic customization, story, unique boss fights, Co-op (important!!!), replay ability, quests, secrets (needs more, like that bow one), long (??? I hope SoG will continue increasing the length of the story mode for quite some time. Good itemization. And also important, FUN. Nothing comes close to SoG and I hope the complete game is as wonderful as it has been up until now.
That Kingdom of Loot seems similar enough to be good, but who knows? The only thing I think of when I hear 'similar to SoG' is that browser game promoting HTML 'BrowserQuest' and that was a simple demo (really fun though). Too short. If that was 10x as long and had more replay ability I would super love it. It had great pop culture easter eggs too.