>>714346070
The first version in 2018 was extremely basic (which fits for a phone game in 2018, think of FGO) with inconsistent art (they use various artists instead of a uniform artstyle), the running look like they were jogging instead of running (funny enough they had bumping mechanic back then, but scrapped them in the final version).
The delay version paid off though since the end product is a higher quality game that earned them 2.5 billion dollars.