Steam! It will hit 20 years this September. Also some games are crazy old and still developed Dwarf fortress is 2006 (almost 20 years old), Open TTD is 19 year

Steam! It will hit 20 years this September. Also some games are crazy old and still developed Dwarf fortress is 2006 (almost 20 years old), Open TTD is 19 years old, probably some others as well.