Games released for Web browsers need to have specific versions of software, not just from their development platform (Java, Flash, etc.), but also their Web browser (Firefox, Chrome, etc.). In fact, some older Web-based games took advantage of idiosyncrasies found in browsers like Netscape or IE, and no longer work in modern browsers.
Music and Sound
The lack of a standard environment, makes it very difficult to pin down a common method of playing music or sound. MIDI was a popular browser music format throughout the 1990s, but has mostly been replaced by PCM formats. All modern platforms are expected to be able to play digital audio, but the formats vary widely. The current digital audio standard of the Internet is OPUS, but various formats have used in the past including MP3, WAV, OGG, RA, and various others.
- en.wikipedia.org/wiki/Browser_game - Wikipedia.