For a very long time, Ba16Ga32Sn104 has been the sole representative of tin clathrates with the type II structure. Herein, we present several new members of this structural family: Cs8Ba16Ga39.7(3)Sn96.3(3), Rb-9.9(5)-Ba13.3(2)Ga36.4(3)Sn99.6(3), and K2.0(4)Ba14.0(4)Ga30.4(2)-Sn-105.6(4). The successful synthesis of these novel compounds was facilitated through the use of alkali and alkaline-earth metals, which selectively fill the available cages.