https://www.moddb.com/mods/stalker-anomaly/downloads/stalker-anomaly-151

disclaimer: haven't played it, am downloading now (~9gb) going to be at least another hour for me. The game was released at the beginning of 2021 but this is was the first I heard of it.

Saw this gameplay vid on odysee and decided to investigate. I played the original Shadow of Chernobyl extensively when it was released and also played through Call of Pripyat a couple of times.

For those more out of the loop than me STALKER is an FPS, released in 2007, set in the "Zone" which is a restricted area around Chernobyl. Following the disaster weird shit started to happen there and the military sealed off the area. STALKERs are people who break the quarantine and run around the Zone treasure hunting and shooting each other. There is a plot but that isn't really the interesting part. The atmosphere of the Zone and the immersive gameplay is the real draw. The game was ambitious and in development for nearly 10 years. It had tons of features cut from the final release that modders were able to access and restore.

STALKER Anomaly is a standalone game game based on the last STALKER release Call of Pripyat. The blurb on the page says it uses a custom fork of the original game engine used by the STALKER series. I can't imagine how much work went into a project this big.