Played field, but we practiced in box before the fields melted/dried. box is way more hectic and unorganized, kind of like hockey; whereas field is fast, but the extra space gives you more time to develop plays and get set up. The best part is racing to the end line when the ball goes out cause the first team there gets the ball-gets wild sometimes! and honestly, grass is way better than turf any day... a nice muddy game in the sun after the rain lets up is a blast.