The Windows port being sold at Steam is from 2015. But of course you have a point; there have been updates in the meantime. It's conceivable that those updates

The Windows port being sold at Steam is from 2015. But of course you have a point; there have been updates in the meantime. It's conceivable that those updates are what's keeping the game marketable. Still, I don't think Steam would confess to deleting a game just because it is old. They carry a lot of games which haven't been updated in years and which still sell.