They aren’t obligated to use any engine and haven’t been using CryEngine for years, it’s on their own fork of Lumberyard called Star Engine. No game is legally obliged to use any 3rd party engine. They have a license to use it but that just gives permission, it’s not an obligation. That lawsuit was an act of desperation by CryEngine as they faced bankruptcy. They settled for pennies on the dollar out of court as it was less expensive than going to trial.
They aren’t obligated to use any engine and haven’t been using CryEngine for years, it’s on their own fork of Lumberyard called Star Engine. No game is legally obliged to use any 3rd party engine. They have a license to use it but that just gives permission, it’s not an obligation. That lawsuit was an act of desperation by CryEngine as they faced bankruptcy. They settled for pennies on the dollar out of court as it was less expensive than going to trial.
Star Engine 4.0: https://youtu.be/nWm_OhIKms8?si=UuTM6wuAn9NiwjHC