Half-Life: Delta is a singleplayer mod for Half-Life 1 that creator Yuri, aka XF-Alien, has been working on for a dozen years. It's been released on ModDB though yet to appear on Steam workshop, while Yuri just seems glad it's done: «it's not so bad, cuz this mod has been in development hell for twelve (was started in August 2009) years. And now it's finally done.»
Yuri was previously responsible for the excellent Arctic Incident Half-Life mod, a smaller singleplayer experience, but this is on
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