The first ever softball game was played back in 1887 between between Yale university and Harvard university students. During that time, the game was called indoor baseball but quickly enough, in 1889, the rules of the game were changed and it became an outdoor activity. Then, in 1895, this game was organized as an outdoor activity for firefighters and was known as ‘kitten ball’ or ‘diamond ball’ (other names included ‘lemon ball’, ‘pumpkin ball’, and ‘mush ball’), the name softball was finally set in 1926. This was also the period when the game became more popular around the United States.