&Ben.Boeckel; &Ben.Boeckel.mail; 2009-08-08 Sigen Sigen is a term made from the initial letters of SIgma Game ENgine . &sigmod; A &sigmod; is a game file for use in &sigen;. Validation Validation is used to verify that all internal references exist, values are within the bounds imposed by the rules or the engine, and that important text values are not empty.