We all have experiences with lesser-known titles that leave an impact on us. Let's share some of those.
Post about more obscure games you've encountered, and what's memorable or intriguing about them. They don't necessarily have to be games you particularly enjoyed, but they should probably be interesting to you in some way.
Don't feel restricted to any particular time period. They can be an old NES game, or something released last year, so long as it's not well-known.
Though I encourage you to try to keep it at least somewhat obscure (so this doesn't turn into a list of stuff that everyone here's already heard about), let's not get too gatekeepy or pedantic about stuff not being 'obscure enough'.
And with that, I'll start.
Xpand Xpo: This may not be, strictly-speaking, a game, though it was definitely game-like. It was a disc that came bundled with my family's first Mac OS computer, and I played it quite a bit as a kid. It was a sort of demo disc, though rather than having just a folder or menu of demos to try, it gave you a physical convention space to explore with various booths, each of which had its own info and video demos of different software and games. It was all pre-rendered, and you navigated via a Myst-like slideshow-style interface.
A funny thing about it was that the virtual space also had a cafeteria and restrooms that you could visit. You couldn't really do anything there, but it was an amusing touch.
This piece of software is definitely not like you'd see nowadays. It was squarely a part of the more experimental era of computing in the 90s, where conventions hadn't yet been fully established and people were just trying stuff. It was a really creative and eclectic time that I still have a lot of nostalgia for, which is why Xpand Xpo still sticks out in my memory.
Here's a screenshot:
(https://i.imgur.com/V0Yft6a.png)