Blind purchases? Wow, that's long ago, way before I had internet, and only if the relevant mags hadn't received a test exemplar or I'd overread the previews. The only ones I do remember right now are Excalibur two thousand something AD (an absolutely horrible game), Blood Omen I stumbled upon on the first day of sale (one of my all-time faves and an unpremeditated purchase I'm most glad of to this day), Battle Arena Toshinden II instead of its rival Tekken (I was impressed to say the least) or Shadowman (if I had only waited for the test of the PSX version instead of buying it on grounds of the N64 test and expecting this crapfest to be only slightly inferior), all for the PSX. Before that... Dragon for the SNES (I didn't exactly regret it, but I'd have expected much more for the price tag), Super Star Wars (one of the very few games I've beat seven times, so I got my money's worth), and before that Super Castlevania IV, another one of my all-time faves and the game which introduced me to CV. Going further back in time... Curse of the Azure Bonds for the C64 was probably my first purchase on blind faith. It didn't exactly glue me to the TV, but it was 2nd hand and therefore cheap. I remember it fondly anyway, just because those were the days *sigh*
One thing's to be said in favor of unpremeditated purchases: You will never have that feeling of giddiness and hopeful anticipation, when you can't wait to get home to unwrap the game and try it out, with a game you know enough about beforehand. These days I find out about new games months and months before release, and I read several tests before I decide whether they warrant a purchase or not; then I order it and wait for the postman to ring, all thanks to the internet. But I miss that peculiar feeling of buying a game, not knowing what to expect, hoping for the best and wanting the bus driver to put the pedal to the metal so I can finally find out. If I were rich, I'd buy all games this way
Zorro
Jam it back in, in the dark.