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96% positive of 3,589 · Overwhelmingly Positive · Live from Steam
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Delta Particles – is a total conversion mod for HL. You're playing as a technical engineer of complex "Delta Base" Nick Farrell. Unfortunately, the protagonist was in the wrong place at the wrong time, as an experiment at the Black Mesa Research Facility resulted in a resonance cascade.
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What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 96% on 2026-11-03 → 96% today (3,589 reviews)
Works, but may need extra effort. Results from Valve's own testing.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Delta Particles v1.3First of all, I would like to say "thank you!" to everyone who has added Delta Particles into their Steam Library. Because the mod has over 100,000 installations at this point! That's not such a bad result.You can proceed with your current …
Delta Particles is a total conversion mod for Half-Life and is finally available on Steam now! Thank you for being with me all this time! Join my Discord and YouTube channel!
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