This coaster depicts the emblem of, apparently, the most popular game of all time; HalfLife
(I really do recommend printing this in a silk-finish orange; I did one for a customer around Christmas 2021 using a sample of silk-orange PLA and it looked fantastic, but I stupidly didn't take photos and my supplier can't get that filament anymore. Kicking myself :/)
If you don't have a 3D Printer and you want one of these coasters please send me a DM and we can arrange for me to print one for you :)
Also check out my Etsy store - www.etsy.com/uk/shop/enterprisexddesign