Yo this is a pretty good game, really simple and effective premise as well, the ending especially is just so sad and distressing. The ending of the game is where this game hits best, and the use of radiation-detector sounds in the game is also genius. The gameplay gets a little repetitive, but for how short the game is and the message that I think the game is trying to communicate, I dont think it matters. I only wish though that there would be some more dialogue options, especially when days keep passing by and the brother starts losing hope himself, there should be more dialogue options for that.
But all in all I think this is a really good game with a simple story, simple gameplay, but with an ending thats extremely shocking and unexpected (in a good way). So I would recommend anyone looking for a very small horror game to play this game.