The only game I actually remember us buying prior to around the windows 98 era was "Cool World" which my dad let me choose at Woolworths (UK)*
But aside from that I remember sooo many DOS games. Some random ones: Wacky wheels, Paperboy, OMF, Pushover, Doom, Heretic, Contraption Zack, Warcraft, Might and Magic, D generation. One called abyss.exe? What was that?
How did I get all these games (and so many more??) some of them were demos, but not all I don't think.
*Probably not suitable for a ~5 year old in hindsight