Back in the late 00's, I used to read Rock Paper Shotgun every day, and I remember that they often linked to really cool indie freeware games.
It saddens me that some of these really cool games are lost in hazy memories, and probably pretty much impossible to find today (I mean, first you have to figure out what their names were...).
Today, you are so spoilt by having everything neatly organized in a Steam/GOG/etc library, so you can easily find that game you played 15 years ago. But that one weird indie game that you downloaded as a zip directly from a developer website? Yeah.... What was that called again?
I dunno how far back the RPS article archive goes, but maybe you could still find that? If its not online there, try the Internet Archive -->
Rock, Paper, Shotgun: PC Gaming’s Beadiest Eyes (here it is in 2007)
that way you could maybe at least find some titles?
Even with Steam I still have problem to find that one game that I bought from a bundle last month
I had to make good use of the hide function just to give my library a semblance of order.
Yeah I know what you mean, sometimes I randomly think of some game I played sometime/ages ago and then have troubles remembering what it was.
but the same thing can happen with music and other stuff, where a glimpse of something enters memory and then drives me half-insane trying to figure out what it is.
and just yesterday I re-listened to a bunch of music I made in my 20s and was surprised how many songs I'd forgotten.
even worse however, is forgetting people, or losing contact with people online that you used to chat with and are now just .... gone, without a hint of how to contact them
oof that went into a weird territory quickly D:
__
edit:
FunnyJay
it seems the RPS archive is still all online, there is even a "free games" category;
Free games (Page 156)
here is the oldest stuff from 2007 still there

the rest, the "normal" articles are to be found here
July 2007 Archive or just by going to the oldest page
Latest Articles