Šimige held a particularly high position in Alalakh, where he headed the local pantheon alongside Ishara and Teshub. In the state pantheon of Mitanni, he was one of the most important deities next to Teshub, Šauška and "Ea-šarri." He is invoked as one of the divine witnesses in the treaty between Šattiwaza and Šuppiluliuma I, where he appears alongside Kušuḫ. References to a solar deity in texts from Nuzi, documenting the religion of the kingdom of Arrapha, are assumed to be evidence of the worship of Šimige  as well. One of them directly mentions that one of the gates of the city of Arrapha was regarded as "belonging to Šimige"  (abullu Šimikuḫḫe). Additionally, a ḫumṭum festival dedicated to a sun god and a weather god, conventionally identified as Mesopotamian Shamash and Adad, which according to an inscription of Shamshi-Adad I took place there, might have been connected with the cult of Šimige  and Teshub. The sun god of the city of Azuḫinnu, located near Arrapha, is also assumed to be Šimige. In another Hurrian kingdom, Kizzuwatna, he was worshiped in Lawazantiya.