Turn 3Deploy Gundam Barbatos 1st Form
Develops the strongest legal board / Preserves one active resource
- Deploy Gundam Barbatos 1st Form8.42 heuristic
- Play Improved Technique6.15 heuristic
- Deploy Graze Custom5.88 heuristic
Gundam Match Lab
Gundam Match Lab
Build. Test. Improve.
Turn a deck list into clear answers about consistency, matchups, and measurable card changes.
- BuildLoad a deck and check legality.
- UnderstandMeasure access, curve, and card-effect coverage.
- ImproveCompare changes with paired simulations.
- TestRun matchups against decks or the current field.
How it worksBuild Better Gundam Decks Show workflow
Gundam Match Lab
Build Better Gundam Decks
Analyse consistency. Test matchups. Optimise your deck using thousands of simulations.
1 Load Deck
→
2 Analyse Consistency
→
3 Improve Deck
→
4 Simulate Matchups
00 / Command
What do you want to prove?
Your deck is ready for analysis.
01 / Build
Current Deck
Edit deck listPaste or revise the 50-card main deck 50-card text list
01A / Analyse
Draw Consistency
Ready
Unofficial fan-made analysis tool. Shared reports contain simulation estimates and may be limited by unsupported card behaviour.
Detailed AnalysisCoverage, Burst odds, and turn-by-turn access
Load a deck to begin analysis.
04 / Cards
Card Browser & Assistant
Loading
Browse Library
Find cards by their printed details
Browse cards by name, set, colour, type, keyword, or effect support.
Filters 0 active
Quick searches
02 / Tune
Does this change improve my deck?
Compare your current deck against a modified version using paired simulations.
Current Deck→Modified Deck→Measure Improvement→Understand Why
Current Deck
Baseline referenceCurrent deck detailsReview the baseline list and coverage
Load a legal 50-card deck in My Deck.
View cards
Modified Deck
Variant testModified deck detailsReview or edit the test list
View or edit cards
Live Comparison
No changes yet
Deck Changes
No changes yet
Clone your current deck, then replace at least one card to begin the comparison.
Experiment Design
Waiting
Test Settings
Optimises for the highest simulated win percentage.
Simulation Plan5,000 paired games
Hand tests10,000 per deck
Expected runtimeMedium
Larger samples improve sampling confidence, but cannot correct card effects the simulator does not execute.
Paired Simulation
Waiting
Run Experiment
Make at least one valid card change to continue.
- Preparing decks
- Generating paired seeds
- Running simulations
- Comparing outcomes
- Building recommendation
Clone the current deck, make a swap, then compare.
Measured Outcome
Waiting
Results
Experiment Output
Your results will include
- RecommendationWhich deck performed better
- Estimated improvementThe measured effect size
- ConfidenceSample and reliability context
- Why the result changedTraceable measured contributors
- Detailed comparisonCurrent and modified metrics
No result data is shown until the experiment finishes.
Deck Optimizer
Choose Objective
Balance overall performance, target the matchup, or improve reliable card access.Choose Opponent or Meta Field
Every candidate faces the same selected opponent.Select Swap Limit
More candidates broaden the search and increase runtime.Run Candidate Search
Legal one-card swaps are screened, then retested with a second seed.
Advanced simulation settings
Larger samples improve confidence but do not correct unsupported card behaviour.
Measured Candidates
Review Recommendations
Ready to test candidate swaps.
Recommendations will appear here.
Each result will show the swap, objective signal, second-seed retest, and confidence.
03 / Test
Simulate Matchups
Run thousands of automated games to measure performance against one opponent or the weighted tournament field.
Choose a legal pilot deck and opponent to configure the test.
How the simulator decidesSee legal choices, heuristic rankings, and model limits
The simulator ranks legal actions with versioned heuristics. Scores compare available actions; they are not probabilities or confidence values.
Published benchmark
Validated: 4 of 4 deterministic checks passed
5,000 mirror games / GD05 constructed / rules-neutral legal mirror / 28 Aug 2026
Policy gml-heuristic-v2 / engine gml-duel-engine-v2
PassedLegal actions and game invariantsObserved 0 illegal actions / 0 invariant violations / target 0 violations
PassedSeed reproducibilityObserved exact seed 73 repeat / target exact repeat
PassedPaired-seat mirror balanceObserved 55.0% first-seat wins / target 52%-56%
PassedRelative heuristic responseObserved 91.8% stronger-curve wins / target at least 75%
Read How AI Plays
Release trendV44100.0% first-seat / gml-heuristic-v1 / limitedV4555.0% first-seat / gml-heuristic-v2 / passed
This benchmark measures deterministic legality, rules-neutral seat balance, and relative heuristic response. Card-effect coverage is reported separately; this does not measure human-level play or predict tournament results.
05 / Advanced
Scenario Lab
Configure a precise board state and manually test one side against the AI. This advanced tool is intended for rules interactions and edge cases.
Configure the opening Main Phase.
06 / Help
Help & Rules
Getting Started
Load, understand, improve, prove
- LoadPaste a 50-card list or load a tournament result.
- UnderstandReview draw access and card-effect coverage.
- ImproveCompare a modified list or test measured swaps.
- ProveRun matchups against one deck or the current field.
Match Lab glossaryPlain-language and technical definitions
Release notesRecent product changes
06A / Releases
Changelog
V45
Fixed / Added / Improved
FixedAddedImproved- Fixed: Corrected the AI target policy that made the second seat repeatedly abandon base pressure for low-value unit trades; the 5,000-game legal mirror now records 55.0% first-seat wins.
- Fixed: Replaced residual first-paint placeholders and made the Meta Pulse tournament indicator switch between live, cached, and fallback provenance correctly.
- Added: Added a hard 52%-56% mirror-seat CI gate, engine and policy version stamps, per-check measurements, invariant monitoring, and V44-to-V45 benchmark history.
- Added: Added automatic tournament-result staleness warnings when the newest tracked event is more than three weeks old.
- Improved: Centralized engine-level objective limitations so one configuration controls Tuning warnings and confidence caps.
- Improved: Generated the in-app release history from this changelog during builds and documented earlier release-number amendments.
V44
Fixed / Added / Improved
FixedAddedImproved- Fixed: Redirected
/and/webappto the canonical/webapp/shell so the root can no longer drift into a separate experience. - Fixed: Added build-version stamps to HTML, response headers, and
/health, with route regression tests for redirects, nested SPA paths, HEAD responses, and user-agent independence. - Added: Baked a recorded AI decision into first paint and published a deterministic 400-game benchmark covering seed reproducibility, legal candidate ordering, paired-seat balance, and relative heuristic response. The current benchmark explicitly reports its observed first-seat bias as a limitation.
- Added: Added separate weighted-field and tournament provenance with explicit fresh, aging, stale, live, cached, and fallback states.
- Improved: Made simulation confidence depend on card-effect coverage as well as sample size.
- Improved: Split Tune deep links into
#tuning-manualand#tuning-optimizerwhile retaining old links as compatible aliases. - Improved: Normalized known GD05 archetype aliases and reconciled release numbering from V36 through V43.
V43
Added / Preserved
AddedPreserved- Added: Added a focused first-visit overview that explains the Build, Understand, Improve, and Test journey before entering the full workspace.
- Added: Added explicit Continue and Don't show again actions with keyboard focus containment, Escape handling, reduced-motion compatibility, and a mobile-safe layout.
- Preserved: Kept the existing Home workflow available after dismissal and left all simulator, deck, rules, and meta behavior unchanged.
V42
Improved / Fixed / Amendment - 2026-08-28
ImprovedFixedAmendment - 2026-08-28- Improved: Restored the target-card identity as crisp light and reverse SVG lockups, reducing the active logo payload from roughly 1 MB to under 5 KB.
- Improved: Moved the complete interface standards out of the player SPA and retained the standalone design-system page as the single reference.
- Fixed: Contained long Build status badges within the deck panel so legality text wraps cleanly instead of overlapping Draw Consistency.
- Fixed: Removed first-paint loading placeholders from Meta Pulse, recent results, and card browsing.
- Amendment - 2026-08-28: V42's public title was clarified during the V44 numbering reconciliation; the release scope and implementation are unchanged.
V41
Added / Updated
AddedUpdated- Added: Added a reproducible Egman GD05 primary-type meta updater and a direct Test vs. Current Meta navigation path.
- Added: Added a compact, validated meta snapshot to initial HTML so Meta Pulse and recent representatives are useful before JavaScript or live data responds.
- Updated: Replaced the previous GD05 top four with Strike Freedom Gundam (32.0%), Shining Gundam (22.4%), Nu Gundam (14.4%), and Gundam Barbatos 1st Form (8.0%) across 125 tracked Egman lists.
V40
Added
Added- Added: Added deterministic deck naming from colour identity, signature Mobile Suit or faction, and inferred playstyle, with a manual override in Deck Tools.
V39
Improved / Amendment - 2026-08-28 / Added
ImprovedAmendment - 2026-08-28Added- Improved: Separated Home from Build so the landing page presents only the product workflow and decision dashboard.
- Improved: Replaced the named-deck homepage status with a neutral legal-deck readiness message.
- Improved: Refreshed the GD05 Meta Pulse and Current Meta representatives from the August field and recent tournament lists.
- Amendment - 2026-08-28: This release was previously displayed under V38 before the V44 numbering reconciliation. The amendment preserves that published history without changing the current V39 scope.
- Added: Added a reproducible
npm run meta:updatemaintenance command for the current GD05 field snapshot.
V38
Improved / Amendment - 2026-08-28
ImprovedAmendment - 2026-08-28- Improved: Adopted the supplied target-card Gundam Match Lab lockup, with a matching mobile mark, favicon, dark-mode contrast plate, and updated design-system specimens.
- Amendment - 2026-08-28: V38 was previously displayed as "A focused Home" before the V44 numbering reconciliation. The target-card identity scope shown above is retained, and this note records the earlier public label.
V37
Fixed
Fixed- Fixed: Added a fail-open path for environments that deny the Worker Cache API while keeping security headers and uncached application responses intact.
V36
Fixed / Improved
FixedImproved- Fixed: Added safe shared caching for the application shell and extensionless SPA routes.
- Fixed: Renamed and protected Reset Deck so modified lists cannot be replaced without confirmation.
- Fixed: Removed redundant workspace chrome and suppressed empty matchup telemetry rows.
- Improved: Consolidated header utilities into Settings and retained one contextual action per workspace.
- Improved: Collapsed valid deck inputs and first-use tuning guidance to shorten repeated desktop and mobile workflows.
- Improved: Separated Card Browser and Card Assistant modes, with Browse Cards as the fresh-user default and compact mobile filters.
- Improved: Led matchup telemetry with the three largest observed differences and moved remaining evidence into a disclosure.
- Improved: Raised meaningful labels, help text, statuses, form values, and telemetry to readable minimum sizes.
- Improved: Replaced the mobile Meta Pulse carousel with a responsive grid and a focused Current Field signal on small screens.
V35
Fixed / Improved / Added / Moved
FixedImprovedAddedMoved- Fixed: Isolated consistency, tuning, matchup, and arena result state so one workspace can no longer replace another workspace's conclusions.
- Fixed: Stored the tuning engine's actual Recent Experiment decision instead of inferring success from a positive raw delta.
- Fixed: Added shared legality preflight, associated error focus, legal replacement actions, and stale-result invalidation for Matchup and Arena.
- Improved: Led tuning and matchup output with decision-first conclusions while keeping confidence, coverage, and sample size distinct.
- Improved: Added mobile-friendly progressive disclosure, contextual actions, and a browsable card grid with set, colour, type, keyword, and effect-support filters.
- Improved: Made Tournament Test the fresh-user default while preserving explicit saved-preset context.
- Added: Added resilient Meta Pulse startup with a schema-validated static fallback, IndexedDB caching, source age labels, a five-second timeout, and one delayed retry.
- Added: Added persisted Simple and Technical views, a plain-language glossary, versioned AI action rationale, and deterministic simulator benchmarks.
- Added: Added a public How AI Plays methodology page and precomputed sample decision.
- Moved: Merged Current Meta into the Matchup opponent selector.
- Moved: Kept the design-system reference in Help instead of the player workflow.
V34
Improved
Improved- Improved: Bumped cache-busting release tokens for shell styles, scripts, and worker assets to V34.
- Improved: Fixed deck-panel header rhythm by adding edge-safe card-stat spacing and title/metric alignment at compact and desktop breakpoints.
- Improved: Added release metadata and changelog notes for the latest V34 UI alignment refinements.
V33Internal
Internal
Internal- Internal: Internal packaging release with no player-facing changes. It was not published as a separate public application version.
V32
Improved
Improved- Improved: Rebuilt the responsive Match Lab identity around a sharper deck-comparison instrument mark with mobile-suit-inspired geometry.
- Improved: Added coordinated light, dark, compact, monochrome, favicon, and mobile logo variants.
- Improved: Increased desktop wordmark presence while preserving the compact 38 px mobile header and overflow-free layout.
- Improved: Removed six unused-code warnings and clarified the public duel-action and compact-result serialization boundaries.
V31
Improved
Improved- Improved: Added a live Meta Pulse status rail for the leading tracked archetype, current-deck effect coverage, and tournament data source.
- Improved: Added numbered system labels across navigation and primary workspaces to reinforce the Build, Tune, and Test flow.
- Improved: Introduced restrained clipped geometry on measured recommendations and matchup outcomes without clipping interactive controls.
- Improved: Elevated Tuning and Optimizer recommendations into high-contrast decision bands in both light and dark themes.
- Improved: Added measured status motion with a reduced-motion fallback and compact horizontal mobile treatment.
V30
Improved
Improved- Improved: Reduced public navigation to the player-facing Build, Tune, Test, Cards, Advanced Scenario Lab, and Help destinations.
- Improved: Folded tournament field context into Matchup Testing and reduced the snapshot to five leading archetypes and five recent top finishes.
- Improved: Combined the Guide, rules reference, methodology links, and collapsed release notes into one Help workspace.
- Improved: Reframed Playtest Arena as the experimental Scenario Lab without removing its rules-testing capability.
- Improved: Reduced the Build dashboard to three primary actions and one recent-experiment signal.
- Improved: Consolidated deck conclusions, key metrics, confidence, and coverage while moving Deck Health, Burst odds, and turn-by-turn tables into Detailed Analysis.
- Improved: Moved export and sharing actions into compact utility disclosures.
- Improved: Reduced Card Assistant shortcuts to search and explanation tasks that do not duplicate the Deck Optimizer.
- Improved: Updated the production runtime and image/CSS processing overrides to patched releases; production dependency audit is clear.
Earlier releases V29 to V1
V29Simplified the primary navigation to Build, Tune, Test, and More.
V28Evolved the interface into a calm Industrial Instrument design language.
V27Added semantic design tokens and unified light and dark themes.
V26Added an in-app Changelog section under Help.
V25Routed exact static HTML paths through the Worker so cached app-shell responses receive CSP and common security headers.
V24Added CSP, HSTS, framing, MIME-sniffing, referrer, permissions, and opener protections.
V23Separated Manual Comparison and Deck Optimizer into distinct workflows.
V22Refreshed featured example decks from the current meta snapshot.
V21Added the guided product dashboard and grouped navigation.
V20Corrected production app-shell routing for browsers and automated clients.
V19Corrected replay card taps during playback.
V18Added the searchable Card Assistant with natural-language queries and starter actions.
V17Added Replay Card Inspector with active effects, modifiers, and interaction history.
V16Added the Automatic Deck Optimizer with measured candidate swaps and retesting.
V15Reorganized the simulator into tabbed workspaces.
V14Added Interactive Test Arena for manual play against the AI.
V13Added Effect Decision Inspector with requirements, targets, costs, and resolution steps.
V12Corrected the Gundam Throne Eins deploy effect and board presentation.
V11Added both players' hands to battle replays.
V10Ended games when direct Unit battle damage reaches a player with no Shields.
V9Expanded executable card-effect modelling across GD01 through GD05.
V8Added Burst shield probability references.
V7Audited GD01 through GD05 card rules and interactions.
V6Expanded the rules engine for GD05 mechanics.
V5Added paired deck comparison in the Deck Tuning Lab.
V4Added transparent card and effect modelling coverage.
V3Refined simulator visual design and responsive presentation.
V2Added tournament matchup simulation.
V1Published the initial Gundam TCG simulator.