This was just released in English yesterday. I've been playing it and having a blast. It's a combination block breaker/RPG/puzzler. IOS App store link - https://itunes.apple.com/us/app/hunger-quest-puzzle-rpg/id958048961 Google store link - https://play.google.com/store/apps/details?id=jp.co.hangame.sj8bitprpg
I love the look of this, definitely up for giving it a go! Edit: Or I would if I could get any of the links to show the game. The iTunes link in your post links to Google Play lol. The TA one just brings up their other games, so it might not be out in the UK.
Runs fine for me. Haven't had any crashes so far. It does require an online connection though - so I'm guessing that's where people are running into issues.
Been having a lot of fun with this game. Haven't personally had any crashing or slowdown issues that people have been reporting so can't say anything about that. I wish iron ore wasn't so rare :<