It has definitely aged, but it is still very fun to play.

The most annoying sign of aging is probably the part when you have to buy one item at a time, instead of simply buying them in stock.
I always use a Turbo controller when I buy Heal potions, and go and make a sandwich in the meantime or something.

There is also the issue with bugs;
this game has lots of them, like for example the Intelligence stat doesn't work, and several of the spells are useless (most notably TMPR).
The game is also very strangely paced:
it takes forever to get to the first ORB, and then all the other ORBs come really quickly.
It is also kind of annoying that chests don't show when they have been opened.

But yeah, it is a very fun game, despite all the imperfections.