Introduction: Full Walkthrough for Keycards in 2025
Explore every Rust monument puzzle for keycards—from easy roadside cabins to mid-tier harbors. This guide shows where to find green, blue, and red cards in 2025, how they work, and the best ways to trade or use them. Ideal for beginners aiming for high-tier loot without wasting time.
General Keycard Info
Rust keycards come in three tiers: green, blue, and red. Each grants access to tougher puzzles—and better loot. You can’t repair keycards, and they disappear after being used a set number of times (green & blue: 4 uses; red: 2 uses). You can buy blue keycards from Safe Zone vending machines (price fluctuates with server demand), fish for blue cards (about 20% chance from sharks, salmon, catfish), or loot scientists for green keys (25% drop rate). Red and blue cards can be sold at the Bandit Camp or your own vending for scrap profit.
Green Keycard Locations – Easy Access, No Radiation
Abandoned Cabins
Head to the yellow two-story cabin near the map edges. Inside, explore both floors—look in crates and on the second floor’s corner table to find a green card.
Lighthouses
Two coastal lighthouses hold green cards. Climb up, break in if needed, power the lights, and search the room on the right—check the corner table for a keycard. Be ready: these spots draw plenty of players.
Supermarkets
Inside one of the supermarket’s left-wing rooms, you’ll find a green card on the table—alongside chance military or regular crate loot. You can enter from outside or through internal doors.
Gas Stations
Spot a green keycard on the table inside the right-hand room—just turn right once inside. There’s a back entrance too, so come in quietly. Be alert—rat spots make this place risky.
Junkyard
Climb onto the central scrap bridge, enter the container—it’s atop that bridge—and locate a green card on the table inside. The area’s large size makes it a hotspot.
Ferry Terminal
Check the building opposite the outdoor recycler. Inside, on a table, you’ll find a green keycard.
Underwater Labs
Inside locker rooms, search the open lockers and adjacent tables—green keycards spawn there often. Radiation protection is needed.
Small Oil Rig
Defeat the bots, climb to the top container, swipe your blue card (you’ll need it), and retrieve a green keycard from a table.
Large Oil Rig
Similar setup: eliminate top bots, reach the yellow container on level three, use a blue card, and grab the green keycard from inside.
Blue Keycard Locations – Mid-Tier, Usually Puzzle + Radiation
Large Harbour
No radiation here. Find the recycler building, follow the containers, insert your fuse, hit the switch, then enter the hangar. Swipe a green card and take the blue keycard from the container inside.
Small Harbour
Access the subway entrance, use the fuse and flip the switch. Up upstairs, use a green card to open the room; the blue card awaits on a table next to loot boxes.
Satellite Dish
You’ll need radiation protection (at least 10%) here, along with a fuse and green keycard. Start at the container on the left side of the monument. Install the fuse and activate the switch. Then, climb up and move to the opposite side to find another container at ground level. Swipe your green card to enter and grab the blue keycard from the table inside.
Sewer Branch
This is a favorite tier-two puzzle spot thanks to solid loot and two recyclers (one hidden underground). Bring a fuse, green keycard, and rad protection (minimum 10%). First, go to the above-ground building near the recycler. Place your fuse and turn on the power. Then, exit and drop into the large underground pipe. Head right, follow the path, and swipe your green card at the locked door. Continue to the second room, where you’ll find more loot and the blue keycard on a table above the underground recycler.
Water Treatment Plant
This is one of the easiest red card locations. There’s light radiation only in the final loot room. Head to the gated building first. Place your fuse on the second floor and flip the switch. Next, run to the building in the corner of the monument. Climb to the top using the ladder, swipe a blue card, and inside you'll find multiple crates and a red keycard.
Airfield
More complex. You’ll need a hazmat suit, two fuses, a green card, a blue card, and weapons to clear out the scientists. Start by entering the main building and placing your first fuse. Turn left into the side room to activate the switch. Then exit, turn right, and run along the fence line until you reach a pipe. Enter and follow the underground tunnel system. Use your green card at the door, fight off the waiting scientist, and loot crates along the way. Insert the second fuse and use your blue card to access the red keycard room. Be ready for another bot inside.
Train Yard
One of the most time-consuming puzzles. You’ll face four different bots and need a fuse, green card, and blue card. Begin at the secondary building and eliminate the two scientists. Activate the switch on the second floor. Then run to the far end and activate another switch at the top of a tower after defeating another bot. Finally, head to the central building, defeat the last scientist, place your fuse, and flip the last switch. Use your cards to reach the topmost room, where the red keycard and numerous crates await.
Power Plant
A longer route, but there are no scientists here, which helps. Turn on the first switch under a stairwell in a side building. Then run across the monument to find another building and activate two more switches. Head into the main building, use a green card to enter, and flip another switch. Upstairs, place your fuse and flip the final switch. The blue card unlocks the top room containing a red card and some crates.
Arctic Base
Difficult due to the large number of bots, but simple puzzle-wise. All you need is a blue card. Eliminate the guards and find the two red containers in the middle of the base. Open the left container and you’ll spot the red keycard in the far-left corner.
Conclusion
Understanding how keycards work in Rust and where to find them makes monument runs more efficient and rewarding. From easy pickups at lighthouses to complex red-card puzzles at the Airfield and Power Plant, each keycard unlocks better loot and higher-tier locations. For beginners, focus first on securing green cards through low-risk monuments or scientist encounters. Then, work your way up to blue and red cards, using each to access the next tier. Selling extra cards or recycling them for scrap adds extra value. Whether you’re fishing for a blue card or braving a puzzle deep in a radioactive zone, this guide equips you with the essential routes for 2025 gameplay.
Frequently Asked Questions (FAQ)
Q: How many times can you use a keycard in Rust?
Green and blue keycards can be used four times, while red keycards can be used twice.
Q: Can you repair broken keycards?
No, once a keycard is used up, it breaks permanently and cannot be repaired.
Q: Where can I buy keycards in Rust?
Only blue keycards can be bought at Safe Zone vending machines. Prices may vary.
Q: What's the easiest way to get a green card?
Loot it from low-tier monuments like Abandoned Cabins, Lighthouses, or from roaming scientists.
Q: Do I need clothes for every puzzle monument?
No. Some monuments like the Large Harbour and Small Harbour don’t have radiation. Others, like the Airfield or Sewer Branch, require protection.
Q: What's the fastest way to farm blue keycards?
Small Harbour and Sewer Branch are reliable options. Both offer manageable puzzles and little resistance.
Q: Which red card location is best for beginners?
Water Treatment is easiest—it requires only one fuse, minimal radiation gear, and no enemies.
Q: What should I do with extra keycards?
Sell them at Bandit Camp for scrap or list them in vending machines for high markups.
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