.flow/yume nikki spoilers, and a lot of .flow's areas and such. Be warned!
Seems a bit more "hostile" them yume nikki, a lot of the places seem less dream-ey, and more, iunno deranged? A lot of rusty, dirty walls, which seems to parallel the outside of Sabitsuki's(Fun fact, Sabitsuki means "To rust together" apparently. Asked a buddy, I don't actually know japanese.) house being all broken down and rusted compared to Madotsuki, kinda neat. I also like how it differentiates with "dreaming" via the computer, and saving through the bed. Found two effects, machine, and mono-eye. Went to the "eye world" and found the mono-eye effect, and my first encounter with the toringen replacements, the rusty/bloody looking guys. Got caught, jumped out. machine was mostly random wanderings. The "Equip" screen intrigues me and I wonder how that's gonna work. I also found the TV effect for the dream world, mouth in the TV, sparking at you when you try to turn it off. That really set the mood for this entire thing, I think, bwahaha. Also found a red area via a guillotine, got teleported out by another fella though. From that point I went up stairs and could only seem to get to one area, so I jumped out.
Next dream session I noticed the map on the "waiting to dream" screen seems to be filling out. Huh. I went into the "flower" map, wandered around, didn't find anything interesting and left again, and then ended up going into an oceany area and found a guy in a diving helmet working furiously on a big black and orange monstrous looking machine, which was probably the first thing to get an involuntary noise outta me. After that I wandered around in the ocean area and eventually left again.
Third time, the nexus was white instead of black. I also notice the mouth effect on the TV seems to be a lot more common then the aztec thing in yume nikki. Went into a big neon area, reminded me a lot of the neon area from yume nikki, but again, there are broken down things wandering around making unsettling noises. More oddly "dark" stuff. Found the headphones. Oddly similar to flute, neat. I always liked that thing. I eventually ended up in a tentacle filled area, that seemed to have the equivelent of those big mouthed monster things in yume nikki that you hit the little lump on that makes them freak out and cough up blood. Went through that area, found rainbow town, let's call it, was neat. But again, once you get to the end and turn around it takes you to an old broken down town with bizzare things chuckling at you. I eventually found a little sun mark and found a "hell" ish area. Eventually found a plant area that teleported you to various islands, and ended with a... Iunno area with "ghost" looking markings and flowers. Got back out and got caught by another rust monster.
One last run. Went into the first area, that telephone pole area to the right of the nexus. Found a snowed area filled with smokestacks, I feel like there may have been an area before it, but I forgot what it was. Eventually found my way to a big power plant with a plant in it, talked to it, suddenly it spread all over the place and caused a visual change. Neat. as I went to the next area, flowers grew behind me and blocked my path, also neat. However, continuing the trend of blindsiding you with terrible things, the next area I managed to find included girls that seemed to be wrapped in flowers, in some cases having flowers growing out of their eye sockets. I'll have to go back without flipping the "flower switch" and see what happens. Next area I found was an entirely white area that led to a hospital with bloody people walking around in it and blood stains on the walls/floor. Found a lady in a bed at the end of the hall, feared a "the ring" moment, but nothin much happened. I kinda forget the next chunk, but I end up in an area with meathooks swinging around on the ceiling, wander through it, find the handgun effect (scares away NPCs good to know. Also >< face.), also find a room with a nurse and a... zombie doctor. Nothing happens with either of them. More wandering leads me to a cafe looking area, including a robot maid lookin lady that bows if you talk to her. Found another "hell" area, but found my way out again immediately. wandered to a nearby elevator, went to the roof. Found a spinning cube, oddly reminescent of the hell teleporting NPCs in yume nikki, and sho nuff, it went to another hellish area. SHortly thereafter I got pinned between two rusty dudes and jumped out.
Somewhere in that last section I also found a "dark" version of the hospital I visited in it, including someone that looked kind've like sabitsuki in a hospital bed. Nothing happened from that. As I wandered down to the end of the hallway, I found the door at the end was missing. I talked to the area on the wall that was the door, and got brief clips of static. Hmmmmm. As I went back, I heard a giggling noise. Naturally I checked the previously not there door. No dice. As I was going back to check, I heard a mumbling noise. Genuinely kinda creepy. I didn't think to check sabitsuki's room. Hmmmm. I also recall finding an orange slime in some area which was adorable, but didn't do much.
Annnd I said the last visit, but I wanted to try one thing... The rust mechanic. I think you activate it by dropping effects in the nexus? We'll see.
I couldn't find a way to drop them. Hmmmm. There's still an empty menu option, maybe I need more effects to unlock that. Anyway, that's my first trip into flow, honestly holding up pretty well to yume nikki. Theorycrafting follows.
I did notice a lot of stuff seems more broken down, Sabitsuki's "nexus" looks about the same shape judging by the big "shattered" segment in the middle, implying that maybe it was the same at some point? Or maybe just following up on the stereotype of people spending all day on computers not being put together very well mentally. I also noticed there's a lot of NPC's/graphical effects you just can't interact with. Maybe Sabitsuki is more antisocial and less "trying to interact but not pulling it off" like madotsuki? Maybe Sabitsuki is more crazy and less depressed? Hmm. Presuming my assumptions about madotsuki are true anyway. Curiouser and curiouser.
Boop.