Outer Wilds is another one that i took far too long to get around to, even though it came out much more recently than Undertale. Still managed to avoid too many spoilers, but that might be due to the strange code of honour that people have when talking about the game

Yeah, it's pretty much as good as people say. Basically a model solar system, with neat planetary physics, and your goal is to solve the mystery of… existence ? I'm not sure actually… i guess your mission is just exploration; investigating whatever seems interesting to you. It's almost a detective game in that way, with the "puzzles" requiring you to link two separate bits of knowledge (in your own head i mean) and deduce a new move, or otherwise just try out a little sideways experiment

I can imagine it's very tricky to design puzzles like this, as so much can get lost in interpretation, and so the game's quality is held up by some very thoughtful design. Speaking of quality, the visuals are lovely and varied. Each planet feels different to each other, both in mechanic and aesthetic - in fact Outer Wilds definitely follows the "quality over quantity" mantra, which often feels the other way round in games these days

I'm not really one to care too much about spoilers (in fact, i would say i'm annoyed with the whole culture), but this is one game where it's deserved, as with the right knowledge, you can "solve" the whole game immediately. I still have Echoes of the Eye to (buy and then) play, so some mysteries still remain…