Need Game Suggestion - Casual Friendly Web/Mobile Turn-Based RPG Game that supports Multi-player

Hello! New here and looking for some help with a game suggestion. Unfortunately it's a VERY specific type of game I am looking for.

A web/mobile turn-based RPG game that allows you take a turn, close the game and wait for the other party member to take a turn (which could be a few hours later, or a few minutes). Think board-game like in it's turn taking. Like Chess is played in many mobile/web apps.

A little background... my brother and Kickstarted a game in 2012 called "Conclave" (https://www.playconclave.com/). It's exactly this type of game. We played it a bunch, have beat the Campaign a few times. We can take a turn in our adventure, and then it notifies the other player it's their turn via Email. So nice and casual, and allowed us to take a few weeks to beat it.

Sadly, the devs are not working on the game any longer, so it's grown stale for us. The game is perfect for us because my brother and I are very busy and being able to jump in and out of the game to take a single turn for a few minutes was perfect.

So something "adventure-ish" like an RPG / Dungeon Crawl / D&D type game, but lets me take turns like a board-game, and then waits for my brother to take his turn.

I have a feeling there isn't much out there like this? But maybe ya'll know!

Thank you!