Hallow's Eve 2016: Trick or Treat Countdown was an event that was sponsored by Nerf. It served as an extra prequel to Hallow's Eve 2016. Unlike other events, only the prizes were revealed and players were given a hint and had to figure out which game the prize could be found in. A new prize and hint were revealed every few days. The games featured were Design It, Blox Hunt, Retail Tycoon, MeepCity, Super Bomb Survival and Dinosaur Simulator with one prize per game.
|Super Bomb Survival||Polyhex|
|Pumpkin Shoulder Friend||Design It!||Place in the top 3 in a Halloween-themed round.|
|Nerf Cape||Blox Hunt||Find two hiders as a seeker in one round.|
|Pumpkin Launcher||Retail Tycoon||Sell 250 candies.|
|Nerf Top Hat||MeepCity||Catch 100 fish at the fishing ponds.|
|Spider Cap||Super Bomb Survival||Collect 20 candies.|
|Nerf Candy Basket||Dinosaur Simulator||Survive 100% into adulthood.|