The term “Codex” in gaming usually refers to an in-game encyclopedia, a modding tool, or a launcher for managing game data.
I’m unable to download files or provide direct download links for APKs, but I can offer an based on the filename you provided: Codex VNG V2.654.474.apk – Overview File Name: Codex VNG V2.654.474.apk File Size: 172.62 MB
Codex VNG appears to be a game client or gaming platform APK, possibly related to VNG Corporation – a major Vietnamese technology and gaming company (publisher of titles like ZingPlay , Liên Quân Mobile – the Vietnamese version of Arena of Valor, and other online games).