Thanks for the comment! The purple drops are souls that you can use to upgrade the gun by going in the graveyard area behind the destructible statues. I unfortunately was unable to add a system that hints the player at that before the jam ended but I am working on a large update for the game that will include it! As for the number / number, it represents how_much_you_have / total_collected, but that is also being re-worked, so thank you for the feedback.