This plugin is included in xFix! It is recommended to use this new plugin over this standalone one!
https://forums.alliedmods.net/showthread.php?t=347457
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There used to be "Advanced Timeleft" by gavvvr, but I do not have a copy of it, and not sure it is was ever archived, but I have no will to search for it, so I made this version, easily accessible. Not a whole lot of games support HUD elements on screen, but HL2DM does.
Use this if your server is a public FFA ( Free For All ) server. Most match server plugins, like XMS, come bundled with their own version of timeleft on HUD ( if your server is a match server, that is ). The plugin uploaded on Sourcemod here is only to provide a detached version. Have fun.