Champion Select & Bench Scout
Tier Lists & Win RatesInstantly see tier rankings (T1-T5) and win rates for both your active champion and available bench rerolls.
The Smart In-Game Overlay for ARAM: Mayhem
Auto-detects your champion and delivers real-time augment tier lists, win rates, and adaptive build paths directly on your screen. Dominate every match without ever Alt-Tabbing.
Everything You Need for ARAM: Mayhem Decisions.
Real-time game intelligence delivered at the exact moment your next decision matters.
Real-Time Augment Tier Lists
S-Tier & Synergy RatingsGet champion-specific Augment tier ratings (S/A/B/C), pick rates, and synergy combos floating over your selection card.
Adaptive In-Store Build Guidance
Augment-Aware SetupsAccess situational item builds dynamically adapted to your chosen Augments directly in the shop view.
Scout the Strongest Pick During Champion Select
Automatically detects your champion and scans the bench pool. Compare mode-specific win rates and popular playstyles so you always enter the Howling Abyss with an edge.
Make Confident Augment Choices in Seconds
When augment round hits, the overlay highlights top-performing augments with clear tier labels, pick rates, and synergy notes tailored to your champion.
Adaptive Item Builds Tailored to Your Augments
Never get lost in the shop. View optimal core items and situational variants that specifically scale with your acquired augments.
Open the overlay. Review the data. Make the call.
Download for WindowsReady in Three Steps.
Zero login required. Zero bloated launchers. Just download, launch, and dominate.
Step 1: Download MetaCodex Overlay
Download the lightweight Windows client directly from lol.metacodex.gg.
Step 2: Launch the Application
Run the installer and launch the app. No account registration or Overwolf installation is required.
Step 3: Play ARAM: Mayhem
Start League of Legends and queue into ARAM: Mayhem. The overlay automatically syncs with your match.
100% Compliant & Ban-Safe Design
MetaCodex operates strictly within Riot Games' third-party developer policies to ensure complete account safety.
No Game-File ModificationMetaCodex does not alter, replace, or inject into League of Legends installation files.
No Game Memory InjectionOperates strictly via compliant APIs and visual recognition without invasive memory hooking.
Zero Automation or MacrosAll decisions, skillshots, and keystrokes remain 100% in your hands. Never performs automated inputs.
Standalone & Bloatware-FreeRuns as a native, lightweight Windows application without requiring Overwolf or background platforms.Need help with the overlay?
Submit in-app feedback or join the Discord community for updates and support.
Frequently Asked Questions
MetaCodex Overlay is specifically tailored for League of Legends ARAM: Mayhem on Windows PC. Support for standard ARAM and Arena is planned for upcoming updates.
Ready for Your Next ARAM: Mayhem Game?
Download MetaCodex ARAM Overlay and bring champion insights, Augment data, and build paths into your game.