The Starting Room Challenge in Call of Duty: Black Ops 6bo6 bot lobby Zombies is one of the most intense limited-time modes introduced in the franchise. Released with the Season 4 Reloaded update, this mode locks players into the starting zone of any round-based map. The goal is to survive as long as possible using only the tools provided in that confined area. With no doors to open and no option to exfil, players are forced to rely on their skill, planning, and the environment to make it through escalating waves of enemies. Reaching specific milestone rounds rewards players with some of the most valuable in-game items available during the season.

There are five round-based maps in Black Ops 6 Zombies where this challenge applies. Each one has unique starting areas and difficulty levels. Despite differences in layout and tools, every map grants three rewards when you reach the challenge round: 15,000 XP, five standard Gobblegums, and one map-specific Ultra Gobblegum.

The maps and their respective rewards are as follows:

Terminus Island
Players must survive until round 30. This is the only map with a milestone below round 40, likely due to its smaller and more confined layout. Successfully completing the challenge here rewards players with the Hidden Power Ultra Gobblegum. This consumable is especially useful because it upgrades the player's currently equipped weapon to legendary quality instantly. Combined with early-round weapon spins, this gives a strong head start in regular matches.

Liberty Falls
In this map, players must survive until round 40 to claim the reward. The unique Ultra Gobblegum here is Time Out. This Gobblegum freezes zombies for a brief duration and makes all purchases cost zero essence during its effect. Players use this to secure clutch perk buys or quick weapon pickups under pressure. Liberty Falls’ spawn area includes several key tools, including a Dark Aether trap and the Mystery Box.

Citadelle des Morts
Reaching round 40 here gives you the Reign Drops Ultra Gobblegum, which spawns every type of power-up at once. The spawn area also has a unique feature: the Der Wunderfizz perk machine becomes available after round 25, allowing players to obtain multiple perks if they can survive long enough.

The Tomb
The Tomb offers one of the most generous starting areas, including the rare Pack-a-Punch machine. Surviving until round 40 grants players the Near Death Experience Gobblegum. This item automatically revives the player with full perks when downed, making it extremely valuable in high rounds. The presence of the Mystery Box, arsenal, and ammo crate make this one of the easier maps to complete the challenge.

Shattered Veil
This final map offers the Wonderbar Ultra Gobblegum for those who make it to round 40. This reward increases the chances of pulling a Wonder Weapon from the Mystery Box in your next game. While not directly useful during the challenge, it enhances future loadouts in a powerful way.

Across all maps, this limited-time challenge rewards players for discipline, resourcefulness, and strategic planning. The XP boost and Gobblegums are great on their own, but the Ultra Gobblegums give players meaningful advantages going forward. Whether you're a veteran or newcomer to Zombies, this challenge offers a great test of skill and a solid incentive for replay.