Read the developer’s statement
The August 11 patch announcement gives the studio’s account. Read the game-content statement and the note on community backgrounds separately.
What the developers said on August 11
The studio says it commissioned the community backgrounds externally and later replaced them. The announcement does not describe how the original backgrounds were made.
Check for later corrections
Check the Steam news feed for a newer dated statement and the Steam store for formal disclosures. If an item is cited, identify whether it is in the playable game, a promotional asset or a community item before comparing it with the statement.
