Clear Sky is the most beautiful and technically advanced game in existing trilogy.
It was very hard to run, but it is still very solid visually.
I like how it adds details to the plot of the first game.
Clear sky received some quality of life improvements, also a feature to join factions and participate in battles for area control, which probably was one thing they wanted to implement in base game.
However, there are some negatives, which make this game a bit worse than first one:
- Faction wars often interfere with main dialogues and as result you can not hear ANYTHING.
- Sound of main dialogues is so quiet that if someone will run or shoot - again, can't hear ANYTHING.
- AI now uses tons of grenades, which looks a bit stupid, just too much.
- Some main mission stages work strange, transitions are rough and chaotic.

But overall you will get new locations, new (and old) characters to meet, it adds and expands first game's storyline, filling some gaps.
And it looks stunning even without mods.

Get out of here Stalker

i ate hard bread while playing for added immersion