It says Warsow, don't think that's right though, looks like it sorts alphabetically for entries without purchase date or something. Think it actually is Age of Wonders or the Witcher (the first one).
I'm assuming it was part of a pack. The first I know I spent money on is Megarace 1&2, because when I was growing up my grandparents had the first one for some reason.
Funny enough my first purchase on GOG was Cyberpunk 2077! In fact I will in turn gift the copy I'll win (if I win) to someone that could not or did not buy it!
First game I got on GOG was actually The Witcher 3. Then they had this crazy sale/giveaway thing when I bought the DLC, they gave me Witcher 1 and 2 for free. Still haven't played them but it was a pretty sweet deal.
my first added game was one of the free ones from back then,
Tyrian 2000,
but my first actual purchase was
Broken Sword director’s cut
(quickly followed by the 2 sequels apparently)