The OpenGameArt.org Winter Game Jam 2022 requires submissions to use art from at least 6 different works on OpenGameArt.org.
Submissions are also required to give proper credit to the works used both via an in game credits screen and on the itch.io page for the game. See the Jam rules for details and an example of how to give appropriate credit.
Does Forgotten Sanctuary use at least 6 different art assets from OpenGameArt.org? If so, can you add credits for the work used to the game's itch.io page?