Back in January I reported on a mysterious gif and plot details for the game Mew-Genics. Now, more information is being revealed about the other characters in the game.

Co-creator Edmund McMillen announced via the developer's blog that Mew-Genics will feature side characters that will switch out depending on the time and day of the week.

"Most of these new side characters will appear and ask something of you," McMillen explained.

Each side character will play a different role that furthers the story and help assist with specific tasks like "break[ing] into the cat genetics lab." Some characters will go completely unseen, only interacting with players through a series of letters.

Mew-Genics will release on Android, iOS and PC via Steam. A release date has not been announced.