One of the best Solo TTRPGs and my personal favorite of them (technically my favorite is now Ironsworn:Starforged). This is an intuitive system once you get started and can be played solo, co-op, or group. It's system is a heavily modified PbtA engine, which I find that system to be hit-or-miss, but here it is tweaked and used to great effect! I'd recommend this system even for newbies to the solo style of gaming, I'm not sure how easy it would be to pick up for someone who has never played any ttrpg. Check it out for free then come back and buy the print. The print (I bought Hardcover) is great quality and the pages are clean and the book itself is laid-out well. If your a gamer, you'll want this for the shelf.