Duplicate of #989, as explained there, each game's developer should be contacted regarding games with a bad configuration.
especially valve game. they haver either no icons, bad icons, bad names or all together :)
Closing duplicate.
Nothing extracted yet.
Tons of games has no own icons for Linux version and that's very annoying that my desktop filled with default Steam icon's (for example Hotline Miami, Worms Clan Wars, Never Alone, etc).