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I have been playing STALKER Anomaly lately, including it's expansion mod pack GAMMA.
And holy shit GAMMA does not hold back, if you like dying over and ovepr again just to get a good start? GAMMA is the mod pack for you, plus STALKER Anomaly is FREE you heard me right FREE. You don't need to buy the stalker games, anomaly is a standalone game with mods that improve (worsen) the experience. And GAMMA is a mod pack for anomaly. With 400+ mods ready, with some deactivated and you can add your own mods to spice things up, you can literally customize your own experience you can tweak shit and boom. A new and fresh start.
So overall, it's fun but oh so difficult.