This is just a little thing I did because I thought it'd help modders somehow, basic cutouts of the cliffs in the outside skyboxes from Half-Life (Excluding cliff, because it does a lot of distance things so its probably not as good as a something to slip other skies into) The first two images above are skies I made by combining ones from other games and ones from Half-Life, they arent the best but they work well enough imo. The third is the sky 2desert, but with the sky removed to show what the cut-outs look like. the cut-out template things can be downloaded here: drive.google.com/file/d/15UHcm1L…
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Those skybox images are my childhood