Catan Robber Rules Explained

The Catan robber rules are simple but often misplayed: when a player rolls a 7, everyone with 8 or more resource cards discards half (rounded down), the roller moves the robber to any land hex, steals one random card from an opponent with a settlement or city there, and that hex stops producing until the robber leaves. It’s the game’s main catch-up mechanic and its best political weapon.

Here’s exactly how the Catan robber rules work and how to use them.

When the Robber Activates

Only one trigger: rolling a 7. At 6-in-36 odds, it’s the most common roll in the game (~17%), so expect the robber to move roughly every sixth roll — about a dozen times per game. The sequence on a 7 is fixed: 1. Discard. Every player with 8+ resource cards discards half, rounded down (10 cards → discard 5; 9 cards → discard 4). Development cards don’t count — only resource cards. 2. Move. The roller moves the robber to any land hex (including the desert). 3. Steal. The roller steals one random resource card from one opponent who has a settlement or city adjacent to the robber’s new hex. 4. Block. The robber’s hex produces nothing while occupied — no resources for anyone on any number.

Placement Rules

Under standard Catan robber rules, the robber can go on any land hex, including the desert and hexes with no settlements. It starts the game on the desert hex. There’s no “can’t place on the same hex twice” rule — you can return it to a hex it just left.

The Discard Rule in Detail

This is the most misplayed of the Catan robber rules. Key points: count only resource cards in hand — development cards (including unplayed knights and VP cards) are exempt. 8 or more triggers the discard; exactly 7 is safe. Discard half, rounded down. You choose which cards to discard — dump your surplus, keep what your plan needs. Everyone discards simultaneously, including the player who rolled the 7. Smart players treat 7 cards as their soft cap and spend down constantly.

Strategic Robber Play

Hit the leader. The default correct move under Catan robber rules: place the robber on the current leader’s most productive hex. Slowing the frontrunner helps everyone, and it’s politically defensible. Steal from the richest hand. You steal one random card, so target the player holding the most cards — best expected value. Block key resources. Sometimes the best placement isn’t the leader’s best hex but a chokepoint resource — the only 6-ore on the board, say. The desert option. Moving the robber to the desert “uses” your 7 without hurting anyone — a legitimate diplomatic move early, or a way to avoid retaliation when you’re ahead.

Defending Against the Robber

Keep hands small — the 8-card threshold is everything. Diversify across hexes and numbers so no single placement shuts you down. Play knights to move the robber yourself — the best defense is a good offense. Stay likable: players rob their enemies, so pleasant, fair-trading players get visited less.

Frequently Asked Questions

What are the official Catan robber rules for stealing? You steal one random resource card (never a development card) from one opponent with a settlement or city adjacent to the robber’s new hex. If multiple opponents are adjacent, you choose whom to steal from.

Can the robber steal development cards? No — only resource cards. Development cards in your hand are safe from both stealing and discarding.

Can I place the robber on my own hex? Yes, though it’s rarely useful. One edge case: placing it on your own hex to deny an opponent who shares that hex.

Do I have to move the robber on a 7? Yes — moving it is mandatory. But you may move it to the desert if you prefer not to make enemies.

Does the robber block the desert’s production? The desert produces nothing anyway, so placing the robber there blocks nothing — purely a neutral placement. These details come straight from the official Catan rules; for the game’s background see Catan on Wikipedia.

Master the Catan robber rules and you’ll turn the game’s most feared mechanic into your favorite weapon.

Catan is a trademark of Catan GmbH. This is an unofficial fan guide.