In January of 2014 to , the game was playable to an extent. The only playable character was Tracer, health packs worked, Temple of Anubis was composed of Grey blocks, and capture points were functional.

When Mercy was first implemented into development builds of the game, her healing ability was green.

Before his first person model was implemented, Zenyatta held Tracer's gun.

Reinhardt's charge originally had no startup time. In some developer versions, he would run instead of charge with his armor's thruster.

The payload was originally a truck during development. Its icon was the Doge meme.

Winston's leap originally had a targeting indicator in the form of a banana with a circle on it where he would land.

When the map Volskaya Industries was originally implemented, it had a capture point that also functioned as a payload.

Hanzo's in May of 2014 development build used the third person animations from Reaper.

During development, Torbjorn had a mechanic where he had to develop his turret from a "stub" before it could shoot.

Hanzo's character is likely inspired by the historical figure Hattori Hanzo, a famous ninja who served the Shogun during Japans Warring Period.

During BlizzCon 2016, Mei's voice actress Yu Zhang revealed that the character's popular line "Sorry! Sorry, I'm Sorry. Sorry." was a botched take that was put into the game anyways. The following year, the game's senior designer at the time Michael Chu took credit for including the line in the game after catching the mistake on tape in the recording booth, citing it as his favorite voice line in the game.

Prior to the official announcement of Yoshi's Crafted World's title, a fake leak was posted on 4chan listing off future Nintendo games, containing the title of Yoshi's Crafted World. This leak was humorous in nature, contrasting legitimate sounding titles such as Animal Crossing: Town Founder and Paper Mario: Clay Catastrophe with obvious jokes such as Metroid: Equestrian Races and Rhythm Heaven and Hell. This led to a short-lived theory that the leak was indeed real and slid in the joke names for humorous effect. Over time, reveals of installments in other franchises featured in the leak that didn't line up would show that Crafted World was simply a lucky guess. However, some other articles from the leak, such as a multi-part DLC pass for Mario Kart 8 Deluxe, Pokémon Diamond and Pearl remakes, a Tokyo 2020 Mario & Sonic Olympics game (albeit without Pac-Man), a Switch port of Overwatch, and the at-the-time-believed-to-be-cancelled Pikmin 4 would come into fruition later by coincidence.