Is SHRAPNEL free to play?

Could you please clarify for me, is the game or platform known as SHRAPNEL available for play without any initial cost or purchase requirement? In other words, does SHRAPNEL offer a free-to-play model, allowing users to access and enjoy the game or service without needing to pay upfront? Additionally, if there are any in-game purchases or subscription fees involved, it would be helpful to know about those as well. Thank you for your time and consideration.