Free Rainbow Six Siege companion
See the plan.
Know your role.
Execute together.
Siege Codex helps your squad coordinate a round. Choose a strategy, give each teammate an operator and a clear job, and send their instructions from Coach Board.
14,000+ registered players · Open to everyone since August 19, 2026
How a round gets won
Pick the map and site
Browse strats for the exact map, bombsite and side you are about to play, or build your own in the editor.
Assign your squad
Put teammates on slots. Each slot carries an operator, a role and a job for the round.
Everyone gets their briefing
Selecting an operator sends that player a one-minute briefing with their loadout and instructions. It ends sooner if they press Back or the coach assigns a different operator.
A catalog with a video rule
Browse community strats by map, bombsite and side. Publishing has one hard requirement: a video walkthrough. If a strat is in the catalog, you can watch it run before you ever try it in ranked.
Found one your squad likes? Save it to your vault, rate it 1–10, and it is ready to assign the next time you queue.
A player’s briefing
OPERATOR · LOADOUT · YOUR JOB
Read your instructions and watch the attached operator video. Your briefing stays open for one minute unless you back out or your coach assigns a different operator.
The coach can browse other plans without restarting your timer.
Briefings, not essays
Choose the map, side and bombsite, open a plan, and assign operators to your players. Each player receives their own loadout and instructions. Move forward or back through plans whenever you need, without recording match scores.
The squad leader steers the plan; everyone else just plays their part.
Build it like a playbook
Give every operator a clear job: where to start, which utility to use, and what to do next. Add loadouts, images and video to help teammates understand the plan.
Keep strats private for your squad or publish them — with a video — for everyone.
Everything in the kit
Strat Catalog
Community-built strats, organized by map, bombsite and side. See the required operators, read their instructions, and watch the attached walkthroughs before trying a plan.
Strat Editor
Choose operators and loadouts, write each player’s instructions, and attach images and video. Keep the jobs clear enough to follow during a round.
Coach Board
Pick a plan and assign an operator to each teammate. Each assignment sends a one-minute briefing. Browse forward or back while your players finish their current instructions.
Team Up
Find teammates who match how you play — platform, region, rank range, comms and schedule. Build a permanent five instead of rolling solo-queue dice.
Siege Quiz
Timed knowledge blitz: operators, gadgets, loadouts and game sense. Race the clock, learn the game the fun way, and climb the leaderboard.
Your Vault
Save any strat to your vault and rate it 1–10. Every displayed score includes its rating count, so players can judge the community signal behind it.
On your phone, no app store
Siege Codex runs in the browser on desktop and mobile, and installs to your home screen as an app — no store, no download, always current. Check your briefing from the couch while your PC loads the match.
Straight answers
Is Siege Codex free?
Yes. Creating an account is free. You can browse strategies, join a squad, receive coach briefings, find teammates and play the quiz.
Do I need to install anything?
No. Siege Codex runs in your browser on desktop and phone. If you want it on your home screen, it installs as an app in seconds — no app store, see the Install page.
Is this affiliated with Ubisoft?
No. Siege Codex is an independent, fan-made companion app. It is not affiliated with, endorsed by, sponsored by, or licensed by Ubisoft.
How do I get my squad in?
Invite your friends from the squad panel. On Coach Board, the coach chooses a map and strategy, then assigns each player an operator. Each player receives their own briefing.
More questions? The Help page covers the details, and the Contact page reaches a human.