Why can’t I back up saves via Google Play Saved Games?

Google Play Saved Games imposes a 3MB file size limit for all backups.

Due to the size and sophistication of Feral’s releases, save files often exceed this. We cannot support Google Play Saved Games until this limit is lifted (or significantly increased).

All Feral games use Google Drive for save backup. Google Drive can accommodate the larger files required and offers users easy access to their saves.