Okay so managed to stumble across a mobile game called Guardian Tales and...
...it's really good????
It's got those gatcha mechanics similar to Arknights, and of course microtransactions, but no adverts at all (same as Arknights) and if it weren't for the microtransactions and character and equipment gatcha thing, it would be quite at home on a PC or console release as a fun little action RPG puzzler thing. It's kinda adorable, and lots of fun, though blimey does it eat battery.
(I will say though that doing ten rolls on the character and item gatcha things is... doable with free resources. Like I've been playing it for a couple of days now? and saving up the 2700 free gems from just completing challenges and events adn story missions has been ridiculously easy to the point I've done a total of two of these things now already... Paying money is absolutely not required it seems, so far.)
