Underworld was published on 4/22/2022 in paperback and kindle editions: Underworld: Esoteric Reality
https://www.amazon.com/gp/product/B09YHY382G/ref=dbs_a_def_rwt_hsch_vapi_tkin_p1_i0

Game Development Studio
Underworld was published on 4/22/2022 in paperback and kindle editions: Underworld: Esoteric Reality
https://www.amazon.com/gp/product/B09YHY382G/ref=dbs_a_def_rwt_hsch_vapi_tkin_p1_i0