Rust Keycards: Green, Blue & Red — How to Get Each One

You're standing in front of a locked door at Power Plant with nothing in your inventory but a pistol and a dream. Keycards are the gate on almost every good monument in Rust, and they come in a strict hierarchy — Green, then Blue, then Red — where each color mostly unlocks the next one up rather than dropping fully loose. Here's what each card actually opens, and the fastest real route to getting one of each.

The Three Colors, Ranked

Green is the entry tier, Blue is mid, Red is the hardest to get and gates the best loot in the game. You don't find them in general loot in any meaningful volume — each one has a specific source, and the honest path is Green first, then use a Green card's puzzle reward to work toward Blue, then a Blue card's puzzle reward toward Red.

How to Get a Green Keycard

Green Keycards drop from scientists — RHIB Scientists, PT Boat Scientists and Military Tunnel Scientists all have roughly a 1-in-3 chance to drop one when killed, with Outbreak Scientists, Bandit Camp Guards and Outpost Scientists as lower-odds backups. They also spawn as static loot on desks inside several small monuments: Abandoned Cabins, Abandoned Supermarket, Ferry Terminal, Junkyard, Lighthouse and Oxum's Gas Station. If you don't want to fight anyone, checking desks at those roadside monuments is the safer route. Completing Power Plant's own puzzle also rewards one.

Green unlocks the entry puzzle at Airfield, Harbor, Launch Site, Military Tunnels, Power Plant, Satellite Dish and Sewer Branch.

How to Get a Blue Keycard

Blue Keycards come from two places: fishing, and puzzle completion. Catfish, Orange Roughy, Salmon and Small Shark — the higher-tier fish you catch with a good rod in deeper water — each have roughly a 1-in-5 chance to give one when gutted. The other route is finishing the Green-tier puzzle at Harbor, Satellite Dish or Sewer Branch, which rewards a Blue card as the payoff for clearing those.

Blue unlocks puzzles at Airfield, Arctic Research Base, Military Tunnels, Missile Silo, Power Plant, Trainyard, Water Treatment, the Oil Rigs and Underwater Labs — it's the card you'll need most often once you're past the beginner monuments.

How to Get a Red Keycard

Red is the top tier, and it only comes from two sources: completing a Blue-tier puzzle at Airfield, Arctic Research Base, Missile Silo, Power Plant, Trainyard or Water Treatment, or buying one outright from Bandit Camp's Scrap 4 Sale vendor for 40-160 scrap. The Bandit Camp route is the reliable one if you'd rather farm scrap than clear a full puzzle chain solo — it skips the danger entirely if you can afford it.

Red unlocks the deepest puzzle rooms at Large Oil Rig, Launch Site, Military Tunnels, Small Oil Rig and Underwater Labs — the rooms with the best loot in the game, which is exactly why the card is the hardest to get.

The Fastest Route to a Red Card

Kill a scientist or check a desk for a Green card first — it's the lowest-effort tier by a wide margin. Use it on Sewer Branch or Satellite Dish, both relatively low-danger puzzles, to get a Blue card as the reward. From there, either push a Blue-tier puzzle yourself for a Red card, or skip the fight and buy one from Bandit Camp once you've got the scrap. Both work; buying is safer, puzzling is cheaper if you've already got the gear to survive the monument.