Published: September 26, 2026 
Control: Resonant is full of optional puzzles that are easy to walk past without a second thought. But the Control: Resonant Atlantis Cafe Cash Register puzzle is one you really don't want to skip. It works differently from the Downtown version, and the reward at the end is well worth the few minutes it takes to figure out. Here's everything you need to know to crack the Atlantis Cafe Cash Register code and find what's hiding behind the wall in Control: Resonant.
Control: Resonant Atlantis Cafe Location in The Park Zone
The cafe you're looking for sits in the southeast of The Park zone. It is located in front of the Research Site. The easiest way to spot it is the lighting. This is the only shop on the block that still has its lights on, which makes it stand out from the darker, quieter storefronts around it.
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Control: Resonant Atlantis Cafe Cash Register Puzzle Answer
After you head in, go walk behind the counter, and you'll find a cash register that's prompting you to enter a four-letter code.
Now, what you need to do actually is to read two separate documents and cross-reference them.
Both documents are sitting right on the counter. Pick them both up before you do anything else.
- The first is the Menu, which lists the drinks available at Atlantis Cafe and assigns a specific letter to each drink.
- The second is a Table Reservation Note that describes which table belongs to which customer and what order they're listed in.
After reading those, walk around the cafe and check the pamphlets on top of four individual tables. Each of them tells you what that table's regular customer orders. Match each drink to its letter from the menu, then follow the sequence laid out in the reservation note to build the code.
Here's the full breakdown:
| Table | Drink Ordered | Letter |
|---|---|---|
| 1 | Iced Coffee | B |
| 5 | The Spiciest Chai | D |
| 4 | Espresso | A |
| 2 | Caramel Latte | C |
The Handwritten Note lists the reservation order as tables 1, 5, 4, 2. That's the sequence you follow to pull the letters in the right order. So, the correct code is BDAC.
That's B from table 1's Iced Coffee, D from table 5's Spiciest Chai, A from table 4's Espresso, and C from table 2's Caramel Latte. Enter those four letters into the register in exactly that order, and the puzzle is solved.
Control: Resonant Atlantis Cafe Cash Register Puzzle Rewards
Once you enter BDAC, a wall panel beside the counter slides open, revealing a hidden stairway going down to one of the Secret Organization hideouts. Inside you'll find:
- A Health Upgrade point from an ice cream stand inside the room.
- Notice of Decommissioning (collectible document)
- F**k You, Larry (collectible document)
The Health Upgrade is the main reason to bother with this Control Resonant Atlantis Cafe Cash Register puzzle. These are some of the most valuable pickups in the game because they directly increase how much punishment you can take in combat. The lore documents are a bonus. If you're following the Secret Organization storyline, this hideout has some material that adds context to what's going on behind the scenes.
FAQs
The code is BDAC. You get it by matching the drink orders at tables 1, 5, 4, and 2 to the letter system on the cafe menu, then following the reservation note's table order.
It's in the southeast corner of The Park zone, in front of the Research Site.
You unlock a Secret Hideout containing a Health Upgrade point and several lore documents tied to the Secret Organization storyline running through Control Resonant.
