About XPLUS.md

About of XPLUS modification.

What is XPLUS? XPLUS is a global modification that changes effects, models, weapons, textures to high definition. XPLUS was created by fans of the game Serious Sam and is distributed for free. The XPLUS modification is designed for the game Serious Sam Classic The First Encounter. A lot of work has been done to replace the textures of all levels with HD textures. Unfortunately, Serious Sam Classic The Second Encounter uses only effects, HD weapon models and a small part of textures from XPLUS.