JustMrGarretto has produced a truly innovative mini-game inside Minecraft recently. Strongly drawing from games like Death Worm, Destructive Worms is exactly what it sounds like: eat all of the enemies as fast as possible, then face a gigantic boss! It comes with 3 detailed levels - countryside, downtown, and nature - each packed with all sorts of things to eat. Can you make it to the end?
One thing that jumps out here is just how much custom content is packed into one map, without plugins or mods of any sort. Destructive Worms is made for version 1.10 and later. Go get it!
The download page includes installation instructions as well. Enjoy!