It's probably too basic a comparison to say this reminded me a lot of Journey, but it did, in a good way. Climbing feels great and I really liked the solemn atmosphere. The letters along the way do a great job of subtly worldbuilding and revealing why you're on this quest, and some of the letters were quite moving. I didn't really feel compelled to get the non-letter collectibles though. The music is also great, really adding to the atmosphere and tone. A nice short game that does what it's trying to do very well and doesn't overstay its welcome.