This is a really really really cool game!!! Love the whole concept. It's very eerie, I love how the story slowly unfolds, I knew something was gonna be wrong but not what, turned out way spookier than I imagined :D I also really enjoy the decoding aspect, it makes it fun :D
I will say the dialogue options are inconsistent, for example, spoilers:
With the child, it responds to "consuming" but not "consume", whereas in one of the previous areas it was the opposite. Things like that make progressing the dialogue somewhat difficult, as you have to not only find the right words but the right variation of them. Speaking of the child, I am completely stuck on it, I can't think of anything more to ask.
One thing that would help is the 'help' bit being more specific. The wording tends to be vague and not really helpful, it suggests I ask questions that the signal does not know how to respond to, e.g. for the child, "ask if they're okay." It doesn't understand that >.< But it does understand "are you safe/in danger". It also says to ask them "what's happening", but it doesn't respond to that, instead responding to "what happened" past tense (despite still being alive). (And also neither of these things have helped me figure out what to ask to progress >.<)
It genuinely is very much fun to figure out what questions to ask, it really adds to the gameplay and the aspect of discovering what happened via verbal breadcrumbs, just not to the point where I'm putting in any word I can think of hoping it'll trigger something ^^;
It is a truly fascinating story, which has left me very very intrigued, I love the whole setup. I think adding more alternative ways to ask questions + more direct prodding in terms of hints, would help make the gameplay smoother and less frustrating, letting us focus more on the story! Because it is a very good story, the creepy aspect of it really works, the way my heart DROPPED when the warning said to stop responding to the signal, to go quiet o_o And the entire concept of the nothingness, and how it's not some cosmic lovecraftian entity like I initially presumed, but a genuine absense of anything and everything, not thinking or having any mind but being drawn to the presence of things, especially towards beauty?? And the way that the greeting realised the deaths of the stars weren't natural because stars don't die in a pattern, that was really creepy :D So much hinting towards Something Being Out There, that no one realises until it's too late, and even just trying to communicate about it marks you as a target, that's really scary I love it :DDDDDD Hopefully I'll be able to figure out how to get past this blockade cuz I GOTTA know more :DDDDD
Excellent work, you have a very creative mind and understand perfectly about how to lay the crumbs for a horrible realisation without giving too much away, you let it sink in with clever words and warnings that only really make sense when put together <3 Love this!!