// Send: GAMES-icon-gamename...
std::stringstream str;

str << "GAMES";

// Oh god this code
for (std::map<uint32, Battleground*>::iterator iterator =
    sBattlegroundMgr->bgDataStore[BATTLEGROUND_HG_1].m_Battlegrounds.begin();
    iterator != sBattlegroundMgr->bgDataStore[BATTLEGROUND_HG_1].m_Battlegrounds.end();
    iterator++)
{
    HG_Game* temp = (HG_Game*)iterator->second;
    str << (temp->HasGameStarted() ? "-2-" : "-1");
    str << temp->GetGameName();
}

SendAddonMessage(sender, str.str().c_str());