This is a free-to-play Half-Life 2 mod that is downloadable on Steam. Basically, they took Half-Life 2 and gave it better visual effects. I have to admit the original game has aged and the mod's new visuals look fantastic.
The lighting has been improved. In the original, you could go to an area with no light source and it would be well lit. In the new version, such areas are now pitch black.
There's new mist and fog effects. It's noticeable when you reach the bridge in Highway 17. Even the toxic waste river in Water Hazard has nice smoke effects.
My favorites are how you can see light rays through windows, bugs flying around dead bodies, and of course a more colored night sky over Ravenholm to make it feel more haunted.
There were also some bugs in the old version that were patched up, new achievements were also added, and I'm looking forward to see what else the mod has improved over the original.
I highly recommend this mod. Half-Life 2 is among my top number list of best games I've ever played that I can't put in any particular order.
I know there's also the cinematic mod, but let's be honest. The visuals are overdone and I'm not a fan of the character design changes (I haven't even gotten over what happened to Crash and Spyro). I also read that they replaced the Kelly Bailey composed soundtrack with that of the Dark Knight trilogy, which sounds kind of cool but still ridiculous.
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I am sick, and in so being I am the healthy one.
If my darkness or eccentricity offends you, I don't really care.
I will not apologize for being me.
There is no such thing as perfect. We are beautiful as we are. With all our imperfections, we can do anything.