Have you ever played the game called "Connect Four" or "Four in a Row"? And you play Minecraft? Well, here you go, a redstone Connect Four mini game inside Minecraft. Now you are probably thinking "what makes this one any different from the other maps that people have made?" The answer is below:

1) Anti-cheating system built in so there is no way to cheat.
2) Completely done with redstone, repeaters, pistons, etc.
3) Has a redstone museum in it to see what i used to build it.
4) Uses sand and gravel for the pieces so don't have to download a modified texture pack.
5) It's fun.

Some Specs of the map:

Redstone: 500+
Pistions: 50+
Repeaters: 100+
Wool: 500+
Sandstone: 50+
Glass: 20+
Redstone Torches: 100+
Glowstone: 50+
Sand/Gravel: 500+
Command Blocks: 4 - 6
Ender Chests: 3
Signed Books: 1
Buttons: 10+
Levers: 2
Redstone Lamps: 2 - 5
Pressure Plates: 4 - 6

Make sure you have Command blocks enabled!