Hesitated a second while rating this. As a narrative experience, this is easily a top-class adventure game that handily wipes the floor with any other game from the mid-90s or earlier. Some of the sexual aspects are gratuitous and kind of inexplicable, even by eroge standards, though not particularly surprising given the state of erotic games prior to the mid-2000s and Kanno's record as a creator. The ending segment is, per creator testimony, incomplete; while still engaging in it's current form, it does kind of leave you to wonder what could've been As a video game...I suppose I'm not the right person to construct a thorough critique of it, I've never been a big point-and-click adventure game fan (and this is a proper point-and-click game by every metric, even surpassing Elf's own Isaku in complexity and scale) and I largely engaged with YU-NO as a modern ADV/visual novel, using a walkthrough to navigate through the gameplay sections to substitute for my own lack of adventure game intuition. I can respect the vision and a good deal of the finer elements, but I think the atmosphere of PC98 adventure games ended up hurting the design; there's really no reason you should have to idly click through an endless wall of flavor text and pixel hunt for the triggers to continue onwards, and the (entirely linear) opening and ending segments are as good an argument as any against the predominant form of command ADVs that prospered when this game was released. Still, I really do like this game a lot, despite my laundry list of complaints with it, and would recommend it in a heartbeat to any fellow retro game and sci-fi enthusiasts.