Marine War is back with more new features!
Jumping: yes
Crouching: for tactical purposes, yes
Credits: Strife, ID Software, Duke Nukem 3D, The Plutonia Experiment, abbuw (for the sandbag texture), Realm667, and Oblige (for the gun case texture)
Custom monsters: yes
Custom textures: yes
ZScript: yes
ACS scripts: yes
custom weapons: yes
click me to download
EDIT: I would like to see your experiences with my mod, so feel free to do so!