From: 
Half-Life: Alpha In GOLDSrc
// Valve Game Info file
// These are key/value pairs. Certain mods will use different settings.
//
game "Half-Life: Alpha In GOLDSrc"
url_info "www.moddb.com/mods/half-life-alpha-in-goldsrc"
url_dl "www.moddb.com/mods/half-life-alpha-in-goldsrc"
version "Pre-Alpha 0.1"
startmap "alpha_c1a1"
trainmap "t0a0"
mpentity "info_player_deathmatch"
gamedll "dlls\hl.dll"
gamedll_linux "dlls/hl.so"
gamedll_osx "dlls/hl.dylib"
secure "1"
type "singleplayer_only"
icon "game"
developer_url "http://www.moddb.com/company/itquaker-craft"