I readed the battle royale manga like 3 times already.Alice in Borderlands is pretty bad. Didn't watch all of it but it feels like it's specifically aimed at a younger audience and it has a cringy anime aesthetic/style going on. Which isn't surprising as I think it was originally a manga. Anime/Manga just doesn't translate well into live action (most of the time).
Not a TV show or movie but if you like this sort of stuff and like to read the Battle Royale book is great. The movie, which is what mostly people know, doesn't really do it justice as it makes some bad changes and has to cram the entire 600 pages into 120 minutes, which they decided to accomplish by focusing on the elements which would add shock value while missing a lot of the more interesting psychological and character focused elements of the book.