I wasn't as sold on Half Mermaid's Immortality as the internet at large, but I'll give Sam Barlow as much rope for his FMV games as anyone else. He recently Xeeted about the studio's upcoming projects C and D, described as "next level FMV, hold onto your seats", and "reinventing 3rd person horror again", respectively. The games now have heavily redacted Steam pages, and Barlow revealed a few more details on Kinda Funny Games (helpfully transcribed a bit by VGC if you can't be arsed watching).
Sci-fi horror Project C's Steam store description starts "Gifted with the", and I'm fairly confident it'll continue "ability to see", based on all the eye imagery and size of the redactions. My prediction is that it'll be a girl who can see alternate versions of the present, using the same kind of layering, and pushing through those layers, that we saw in Immortality. This prediction is strengthened by the fact Barlow says that it's "in the tradition of Immortality, building on some of that tech but going in a cool direction." The description also says "kaleidoscopic" and "future", so perhaps you need to find the path through the shifting options to reach the right future. Barlow also described it as a "cool little puzzle box", and "the chunkiest mechanic we've come up with" - although I don't know what that last point means. Of the two games, I think I'm more interested in this one.
Project D's store page just says "Something bad", "Some doors" twice, and then "home?". So, you get stuck going through doors, which can lead you to different places, and have to try to get home? It seems to be set in or around 1983, and maybe you play a nurse. I'm going to go out on a limb and say that it isn't reinventing horror tropes, at any rate. "This is a third-person survival horror game," Barlow says on Kinda Funny, "but like, take that and then imagine what happens if the Immortality team fuses with a third-person survival horror game." That could be very cool, because I kind of can't
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