- For the Uber Rare Set with similar name, see Girls & Monsters: Angels of Terror (Gacha Event).
Girls Mons (ガルズモンズ, Garuzu Monzu) was a Japanese-exclusive puzzle-based combat game developed by PONOS, the Android version released on September 25th, 2016 and the iOS version on October 7th, 2016. However, this game had been decided to shut down all services in January 19th, 2017 (14:00) As an appreciation to the players that played Girls Mons, a character "Undead Cat" (死にたてにゃんこ, Shinitate nyanko) was added to Battle Cats (JP) as a Special Cat.
Undead Cat can be unlocked by accessing to this URL: https://ponos.s3.amazonaws.com/information/appli/battlecats/news/girlsmons_charaget.html
The URL is available in the help menu (in the "豆知識" tab) from the title screen.
- *The player can unlock Undead Cat in the Special Cat screen from the Upgrade menu.
- *The player needs to update Battle Cats to the version 5.7.0 in order to get this Cat.
In update version 6.0 of Nyanko Daisensou, an Uber Rare Set was created to comemorate the game, Deadly Shoujo: Girls Monster.