magfed only games are paintball games were all the players on the field use a Marker that uses mags to feed the paint in the marker. this will reduce the amount of paint a player haves to some thing like 20 rounds for each mag. compared to the 200 rounds a hopper holds. making it play as a different game. were movements on the field can be more silent. since you cant rely so much on cover fire. and some other tactics paintball have developed over the time once it became faster and faster paced. magfed markers also make it possible for player to optionally shoot with a different type of paint that is more accurate and flies further those are called First strikes. and some field allow every one to use them some other events restricks it to only bolt action use.