Creating a feature for such a game involves several steps, but given the context, I'll interpret your request as wanting to understand how features are added or modified in games like Resident Evil 2, particularly with custom or fan-made content.
: Adds three free "what if" scenarios featuring characters who didn't survive the main story (The Runaway, No Time to Mourn, and Forgotten Soldier).
This reduces fog shadows and improves FPS in outdoor areas (e.g., police station parking lot).