Minecraft Battleship (the Game, Not a Build)
I had the unique pleasure of being presented this delightful game recently: a fully working, mod-free "Battleship" game, right inside Minecraft, by magib1! Battleship has come in many forms over the years, most commonly as a board and/or computer game, where players deployed their ships across a grid, then took turns trying to guess where their opponent's ships were, and sinking them.
magib's map creates the game in more ways than one; aside from having the ability to place your ships as you see fit, and the usual "take shots at where you think their ships are" mechanics which are standard, his map also spawns a ship model for every ship a player deploys, which will get "shot" with deployed TNT on a hit. It's crazy fun!
If you want to try out this insane map for yourself, be sure to drop by the Battleship thread, which has the download links. Enjoy!
Feel free to download the map and see for yourself. You absolutely can do those things in vanilla 1.7+ with the setblock, testfor, testforblock, and summon command blocks.
I suppose *lots* of command blocks are involved.
Does the build have various "watch windows"? That would be even cooler. The shots in the video seem to come from arbitrary "creative floating" positions from inside the play area itself, and not from actual "players + bystanders on a server watching the game" positions from the walls.
No Command Blocks for PE dood, just stick to mining now
There are no set observer positions, but there is an observer team that will put a player into creative mode and allow them to freely fly between play areas. Teleport buttons in the order selection and tutorial rooms may be used to quickly jump from one side to the other. To join the observer team, hit the button on the green block in the room you first spawn in.
Close skydoesminecraft did a vid of it!