Game servers by the hour. Pay only when you play.
Spin up a Half-Life 2: Deathmatch dedicated server by the hour. Gravity-gun deathmatch on all official maps, free-for-all or teams, ready in ~5 minutes.
Your own box for you and friends. No SteamCMD, no port-forwarding. Deathmatch or Team Deathmatch, your call.
dm_lockdown, dm_overwatch, dm_runoff and the rest. Set player count, gravity and frag limit, and admin over RCON.
The magnum, the crossbow, props off the gravity gun. HL2:DM plays best with your own crew, not waiting on randoms.