If you want to upgrade Half Life 2's visuals without compromising Valve's artistic vision, then the upcoming MMOD is perfect for you. The mod leaves the game's environment and models intact, but brings huge visual upgrade with plethora of visual effects, particles, lighting etc. Since certain effects won't be to everyone's liking, 98% of the mod's features can be turned on, or off on the fly. The MOD is still not finished, but something tells us this one will be worth the wait.
The latest MMOD update brings the following:
New Main Menu based from Open-Source GUI, which includes main menu music playback
New Post Processing shaders like : Film Grain, Lens Dirt, Cinematic Overlay with blue tint and chromatic aberration, Color Gradient, Cross Processing for more vivid colors, Anamorphic Bloom, Bokeh DoF and FXAA
New Particle effects : new muzzle flash effects, new explosion effects, new bullet impact effects, eject brass smoke and sparks, new combine energy ball effects, new tracer effects and more!
All new misc features like : L4D2 Muzzle Lighting, more blood option ( decals ) for all your naughty needs, blood which can be casted on every object in the game, flashlight attachment, immersive camera, camera roll and experimental dynamic grass.
You can check out the changes in the video below, but take note that "almost any new viewmodel, sound, retexture you see is not a part of the mod, those assets can be downloaded separately and hooked up with "custom" mod folder which functions like any other steampipe "custom" folder."
You can keep track of the MMOD's progress on its ModDB page.