CoD: Black Ops 4 Zombies Survival Guide: IX - Dot Esports

This map throws you right into a gladiator pit.

IX Walkthrough - Call of Duty: Black Ops 4 Guide - IGN

Guide for Call of Duty: Black Ops 4 - Zombies - IX

Surviving “Forsaken” — A Guide to the Final Chapter of Call of Duty®: Black Ops Cold War Zombies

Surviving the Apocalypse: Which Call of Duty has Zombies?

IX - Black Ops 4, Zombies - Call of Duty Maps

Surviving “Mauer der Toten” – A Guide to the Black Ops Cold War Season Four Zombies Experience

IX, Call of Duty Wiki

CALL OF DUTY BLACK OPS 4 Zombies IX Gameplay Walkthrough [1080p HD 60FPS PS4] - No Commentary

IX Walkthrough - Call of Duty: Black Ops 4 Guide - IGN

IX Walkthrough - Call of Duty: Black Ops 4 Guide - IGN

IX Walkthrough - Call of Duty: Black Ops 4 Guide - IGN

Guide for Call of Duty: Black Ops 4 - Zombies - IX