The first of these thematic innovations was the Lion Head in 1931, and then came the War Eagle and the Roman Head, and in 1933, it was the Castle Front. As slots became more and more attractive, more and more players were lured to them.
Ang unang ng mga pampakay mga makabagong-likha ay ang Lion Head sa 1931, at pagkatapos ay dumating ang War Eagle at ang Roman Head, at sa 1933, ito ay ang Castle Front. Tulad ng mga slot ng naging mas at mas kaakit-akit, mas at mas maraming mga manlalaro ay lured sa kanila.