An Endless NATO Phonetics Game (Designed for Web)
Access the Link, here's the link or at https://phonecho.reubenhu.my.id and start play!
Well, it's been well documented in Wikipedia https://en.wikipedia.org/wiki/NATO_phonetic_alphabet.
Yes, if you use Chromium Browser, you might be offered to install this game as an app. After that, You should able to use it offline, after you load everything from the get-go.