Are there any shortcuts for the countdown command?

Yes, you can use ";countdown1" as a shorthand.

What rank do I need to use the countdown command?

You need the Admin rank or higher in HD Admin to use this command.

Type ;countdown [Seconds] in the chat while playing a game with HD Admin installed.

No, this command only works in games that have the HD Admin plugin installed by the game developer.

HD Admin Admin

The countdown command displays a countdown from specified seconds to 0 to everyone as a hint.

This command displays a countdown from specified seconds to 0 to everyone as a hint.

;countdown [Seconds]

Example: ;countdown 60

This command displays a countdown from specified seconds to 0 to everyone as a hint. Run this command from the in-game chat by typing ;countdown.