"Command HQ" supports head-to-head play by two players connected remotely via serial (RS-232) cable, dial up modems, or locally via a null-modem cable. No option exists for broadband Internet users; making it mandatory to tie up the phone lines. A plugin for IPX/SPX exists. The game is playable over the internet using DOS Box. The player can also install the latest version of the game from Safeharborgames, and play online there without charge or copy protection issues. A Facebook page related to command hq also exists.