This is a minecraft version of the TF2 map Turbine and is running on the Infamy modern warfare pack on the FTB launcher available at:
feed-the-beast.com/ 
IT WILL ONLY WORK ON THAT PACK AND NO OTHERS!!!!
You can play this map with as many people as you want but there are only 5 classes so I would recommend 6+. Sniper, medic, soldier, scout and engineer are all the classes available. All of this means there is lots of opportunity for fun and you. I intend on adding more TF2 maps as soon as I get some time.