So it is. I thought it wwas something else, but it's X-COM / UFO as you said. On https://sounds.spriters-resource.com/ms_dos/xcomufodefensexcomenemyunknownufoen

So it is. I thought it wwas something else, but it's X-COM / UFO as you said. On https://sounds.spriters-resource.com/ms_dos/xcomufodefensexcomenemyunknownufoenemyunknown/asset/418608/ https://sounds.spriters-resource.com/ms_dos/xcomufodefensexc... it's ui_message.wav