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Yes, you can make the crystals glow. Click on one of them, go to the left panel (ObjectPropretiesTree), and there should be a property called Light. You need to choose the color, radius, and coordinate relative to the center of the object.
It's strange, but nothing appears for me. I click on it and also press the spacebar and click on the panel, but the property doesn't show up.
Делаю кампанию "Последний Феникс"