ARC Raiders Best Locked Key Room Tier List: Day and Night Loot Guide

Locked key rooms are one of the most exciting and risky parts of ARC Raiders. If you have spent any serious time in raids, you already know that not all keys are created equal. Some rooms will absolutely shower you in value, while others barely justify the danger and noise they attract. After hundreds of day and night raids, testing every single locked room multiple times, this ARC Raiders best locked key room tier list is built to help you decide which keys are actually worth using.

Before we dive in, a quick note for players who are short on time. Some Raiders choose to buy cheap ARC Raiders coins from trusted sources like PVPBank to help with crafting and progression. That said, this guide is all about maximizing value through smart looting and good decision making, not shortcuts.

This tier list focuses on real results. Actual loot value. Risk versus reward. PvP pressure. Ease of extraction. Day and night loot differences. Everything a veteran player actually cares about when deciding whether to burn a key or save it.

How Locked Key Rooms Work in ARC Raiders

Locked rooms in ARC Raiders require key cards of different rarities. Green keys are the most common, blue keys are mid tier, and pink keys are the rarest and most valuable. These rooms usually contain lockers, crates, weapon racks, and searchable objects that can drop high tier weapons, attachments, blueprints, healing items, and rare trinkets.

Night raids consistently offer better loot than day raids. The difference is not subtle. Night runs often increase both the quality and quantity of items, but they also raise the risk level significantly. More enemies. More players. More chaos.

The ARC Raiders best locked key room tier list below takes all of that into account.

What Makes a Room S Tier

An S tier locked room delivers consistent high value loot in both day and night raids. These rooms justify the risk, attract players for a reason, and are worth prioritizing even if PvP is heavy.

Dam Staff Room Key

The Dam Staff Room is one of the most reliable rooms in the entire game. Located on the ground floor of the control tower, this room is packed with red lockers and high value spawns.

Day raids already feel strong here, often pushing close to ninety five thousand in value. Night raids take it even further with top tier weapons, attachments, and rare components. The fact that it only requires a green key makes this room borderline broken in terms of value.

Dam Control Tower Key

If there is one room that defines endgame looting in ARC Raiders, it is the Dam Control Tower top floor. This pink key room is infamous for a reason.

Day raids can already hit massive value with barricade kits, Ventor three weapons, blueprints, and heavy parts. Night raids regularly push past one hundred thousand value.

The downside is obvious. Zipline access. High visibility. Extreme PvP pressure. Still, if you want raw profit, this room sits firmly at the top of the ARC Raiders best locked key room tier list.

Buried City Town Hall Key

This room is huge. Multiple floors. Tons of loot containers. It is very easy to fill your entire backpack here.

Day raids are decent but night raids are where this room really shines. High tier weapons, attachments, and value spikes that can push well past eighty thousand. Bring space or bring a friend because leaving loot behind feels bad in this one.

Stella Montis Security Checkpoint Key

This blue key room punches way above its rarity. It offers an excellent mix of blueprints, trinkets, weapons, and attachments.

Night raids consistently improve already solid loot pools, making this one of the most enjoyable and reliable rooms to loot. If you enjoy blueprint hunting, this room is a must.

A Tier Rooms Worth Your Keys

A tier rooms are strong, profitable, and usually worth opening, but they may carry higher risk, lower consistency, or situational downsides.

Stella Montis Assembly Admin Key

This is a compact room with a very high blueprint drop rate, especially at night. Day raids are fine but nothing special. Night raids turn this room into a blueprint goldmine.

If you are hunting specific unlocks, this room earns its A tier placement easily.

Dam Surveillance Key

Located in Water Treatment Control, this room has decent loot but sits in a very busy PvP area. Day raids can reach respectable value, while night raids tend to be slightly weaker overall.

The loot is good. The danger is real. That balance keeps it out of S tier.

Blue Gate Communication Tower Key

This room is fast to clear and surprisingly loot dense. Both day and night raids provide solid weapon, attachment, and healing spawns.

It is not flashy, but it is reliable. That consistency earns it a comfortable A tier spot.

Spaceport Control Tower Key

Another pink key room with massive potential. Day raids already feel good, but night raids can explode in value, sometimes rivaling top tier rooms.

The main drawback is risk. Zipline access and visibility make this a magnet for PvP. Still, the loot justifies the danger.

Dam Testing Annex Key

This key opens two rooms, but the larger one down the hallway is the clear winner. Always go there.

Night raids are particularly strong, with high tier weapons and attachments pushing value well above seventy thousand. Day raids are respectable but not standout.

Blue Gate Cellar Key

This room is all about convenience. Single entrance. Easy to barricade. Quick loot.

Night raids significantly improve its value, making it one of the best green key options if you want fast and relatively safe profit.

Stella Montis Archives Key

This pink key room is loaded with bandages, trinkets, and blueprints. Bring a looting augment and a big backpack.

Night raids offer strong blueprint potential and solid value. This room is a favorite among players chasing unlocks rather than pure weapon drops.

Blue Gate Confiscation Room Key

This room used to be forgettable, but recent loot improvements pushed it into solid A tier territory.

Day raids are decent. Night raids offer better weapons and blueprint chances. It is not top tier, but it is no longer a waste of a pink key.

B Tier Rooms Situational but Useful

B tier rooms are not bad, but they require specific goals or circumstances to justify opening.

Spaceport Warehouse Key

Small room. Tight layout. Quick clears.

Day raids offer moderate value and night raids do not scale as well as other rooms. Still useful if you want attachments and fast loot without overcommitting.

Stella Montis Medical Storage Key

This room focuses heavily on medical supplies and blueprints. If you need healing items, this is a solid option.

Night raids improve the loot pool, but overall value remains mid tier.

Spaceport Container Storage Key

This room is risky due to multiple entry points and open layout. Loot can be solid, but exposure is high.

Better suited for confident players who can handle PvP pressure.

Buried City Hospital Key

Great for medical supplies with occasional weapon and attachment value.

Night raids noticeably improve returns, making this room more viable if you need sustain items.

Spaceport Trench Tower Key

Large towers with multiple entry points. Loot is decent, sometimes surprisingly good, but chaos is constant.

Best looted with backup or strong situational awareness.

Buried City Residential Master Key

This key opens multiple rooms, but Grandioso Apartments is the best option.

Day and night raids are acceptable but not exceptional. Other residential locations underperform, making this key inconsistent.

C Tier Rooms Usually Not Worth It

C tier rooms are generally underwhelming compared to the risk or key cost.

Blue Gate Village Key

Quick to loot but rarely satisfying. Day raids are weak and night raids only slightly improve returns.

Not barricadable, which adds risk without reward.

Buried City JKV Employee Access Card

This green key room is fine but forgettable. Night raids can push value slightly higher, but it rarely competes with better green key options.

Use it if you have extra keys, but do not prioritize it.

Day vs Night Loot Differences Explained

Night raids are almost always better for locked rooms. Higher tier weapons. Better attachments. More blueprints. More value.

The tradeoff is increased danger. More enemies. More players. More third party fights.

Veteran players often save their best keys for night runs and use lower tier keys during the day to minimize losses.

Final Veteran Advice on Locked Key Rooms

Keys are a resource. Treat them like one.

Do not burn pink keys on mediocre rooms unless you are desperate or experimenting. Learn which rooms fit your playstyle. If you hate PvP, prioritize rooms with single entrances. If you love high risk runs, chase the control towers at night.

This ARC Raiders best locked key room tier list is not just about numbers. It is about survival, extraction, and consistency.

Loot smart. Pick your fights. And always remember that the best loot is the loot you actually extract with.