Hot Feet is a game where the goal is to survive as long as possible as the blocks below you fall into a pit of lava. You can play it by yourself or with 3 other friends! There are also 4 chests in each corner of the play area that contain (sheep and pig) eggs and dyes for each colour. The game is heavily based off of AchievementHunter's Minecraft Let's Play "Hot Foot".
Extract the .zip file and move the folder into your Minecraft's saves folder/your server's main folder.