T-Minus Halloween Countdown Cost: $9 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions T-Minus Halloween Countdown: T-Minus Halloween Countdown Clock. Count down the time to the most "spook-tacular" time of the year - Halloween. Whether you plan to trick-or-treat or attend a Halloween party, you can track the time to All Hallows' Eve. You can play our spooky sound effects. Your anticipation will build as you count down the days, hours and minutes.