NIKKE Fatal Maid Event Guide: Voucher Math & Login Farm

Event Overview: Dates, Mechanics & Key Differences

Event Period: January 29, 2026 15:00 UTC+9 (maintenance 11:00-15:00) through February 11, 2026 23:59 UTC+9.

Core Mechanics:

• 5 Event Tickets regenerate daily (10 ticket cap = 1-day buffer)
• 1 Challenge Chip daily (13 total)
• Stamina cap of 10 means natural regeneration won't clear premium tiers

Bonus Nikke System:

• Velvet: +60% currency (+50 certificates per proc)
• Cocoa/Ade: +40%
• Others: +20-30%
• 85% patron request rate for Velvet shows community recognition

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Overlapping Events:

• Union Raid: January 30 5:00 - February 5 4:59 UTC+9 (3 free daily entries, no stamina cost)
• Coordinated Operation Ziz: January 30 12:00 - February 1 23:59 UTC+9

Unique vs Standard Events:

• Strict 13-day timeline (missing 2+ days wastes tickets)
• Bonus Nikke roster creates 50-80% efficiency gap
• Velvet available via Special Recruit (2% rate) until February 11

Rewards:

• Stage 1-12 completion: CG FATAL MAID
• Event shop: 8,000-15,000 certificates for full clear
• Velvet Sensual Rabbit costume (Mission Pass premium, refreshes February 1)
• 30 Code manuals daily (390 total)
• Union Raid bosses: Laitance (Fire weak), Fingers (Wind weak), Grave Digger (Iron weak)

Complete Voucher Math: Exact Numbers

Total Obtainable Vouchers

Daily Regeneration:

• 65 Event Tickets (5/day × 13 days)
• Without bonuses: 520-650 certificates (8-10 per ticket)
• With Velvet (+60%): 975-1,170 certificates (15-18 per ticket) = 87-80% increase

Challenge Chips:

• 13 total across event
• Contribute 15-20% of total certificate income
• Higher certificate concentration than standard tickets

One-Time Missions:

• 8-12 missions at 200-500 certificates each
• Total: 1,600-6,000 certificates
• Mission Pass premium: +2,000-3,000 certificates

Union Raid Indirect Value:

• 18 free entries preserve stamina for event farming
• Saved stamina = 270-324 certificates at Velvet rates
• Equivalent to 4-5 days natural regeneration

Shop Cost Breakdown

S-Tier (3,000-5,000 certificates): Limited skill books, exclusive materials, event collectibles. Irreplaceable—missing means months of waiting or permanent loss.

A-Tier (2,000-3,000 certificates): Advanced enhancement materials, stamina refills, premium consumables. Accelerate progression but obtainable elsewhere.

B-Tier (1,500-2,500 certificates): Character-specific materials, cosmetics, convenience items. Evaluate against roster needs.

C-Tier (1,500-3,500 certificates): Common materials, low-efficiency consumables, luxury cosmetics. Completionists only.

Required vs Naturally Earned Gap

F2P (no bonuses): 8,000-10,000 certificates = S-tier + most A-tier items

F2P + Velvet: 12,000-15,000 certificates = near-complete shop clear

Gap to full completion: 7,000 certificates = 388-467 stamina at Velvet rates = 324-389 gems (100 gems per 120 stamina)

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Late Start Penalty:

• Each missed day = 5 tickets (75-90 certificates with Velvet)
• 5 days late = 375-450 certificate deficit = 250-300 gems to recover

Buffer Analysis

1-day buffer: 10-ticket cap means missing 1 day wastes zero tickets

Mission Pass buffer: 2,000-3,000 certificates covers 2-3 missed days

One-Time Missions buffer: Completing all can offset 3-5 missed days

Minimum Login Plan: Laziest Path

Daily 5-Minute Routine

1. Claim 5 regenerated Event Tickets (2-3 minutes)
2. Deploy Velvet + bonus Nikkes, auto-battle = 75-90 certificates
3. Claim Maid Cafe Stamp login rewards (30 seconds)
4. Check One-Time Missions for completable objectives (200-500 certificates)
5. Union Raid: 3 free entries if active (3-5 minutes)

Total time: 5-8 minutes daily

Skip Challenge Chips on casual days—batch-complete during weekends (accumulate 5-7 chips, clear in one 15-minute session)

Weekly Mission Priorities

Auto-complete through daily routine:

• Complete 30 event stages = 6 days full ticket usage
• Earn 5,000 certificates = passive progress
• Deploy specific Nikke types 50 times = team composition tweak

Avoid missions requiring:

• Gem expenditure

• 30 minutes unless offering 500+ certificates

Login Milestones

7-Day Login Event Maid Cafe Stamp:

• Days 5-7 offer premium materials
• Missing 1 day resets progress
• Set alarm for 15:00 UTC+9 daily

Mission Pass refresh: February 1 UTC+9 = mid-event checkpoint to assess pace

Auto-Battle Optimization

Settings:

• Enable auto-skill usage
• 2x battle speed
• Disable unnecessary animations
• Reduces completion time from 90s to 30-40s

Team Composition:

• Velvet in position 1-3 for maximum screen time
• Add Cocoa/Ade for stacking bonuses
• Bonus Nikkes > meta DPS (certificate efficiency trumps clear speed)

Shop Priority Tier List

S-Tier Must-Buy

• Event-exclusive skill books/character molds (never return)
• Velvet molds (if available via Gold Mileage Tickets)
• Limited enhancement materials (3-6 month acquisition timeline)
• CG FATAL MAID (Stage 1-12 clear, zero certificates, permanently unobtainable post-event)

A-Tier High Value

• Advanced upgrade materials (1-2 month alternative timeline)
• Stamina refill items (recursive value: 500 certificate cost → 600 certificate stamina yield)
• Materials for meta units you actively use (Velvet, Cocoa, bonus Nikkes)

B-Tier Situational

• Cosmetics (Velvet Sensual Rabbit costume: 2,000-3,000 certificates, zero gameplay value)
• Materials for owned but rarely used characters
• Convenience items (auto-battle tickets, stamina expansions)

C-Tier Skip-Safe

• Common materials farmable through daily stages
• Low-efficiency consumables (minor EXP boosts)
• Duplicate cosmetics/collectibles

Clearing Order by Player Type

Ultra-Casual (8,000 certificates): S-tier → A-tier character materials for main team → Stop

Standard (10,000-12,000): S-tier → A-tier → Selective B-tier (cosmetics OR niche materials, not both)

Completionist (15,000+): S → A → B → C in descending order

Stamina Efficiency: Zero Waste

Natural Regeneration Contribution

• 65 Event Tickets + 13 Challenge Chips = 78 stamina
• At Velvet rates: 1,170-1,404 certificates
• Only 14-18% of 8,000-certificate minimum
• One-Time Missions mandatory—natural regeneration alone insufficient

Union Raid value: 18 free entries = 270-324 certificates (3.5-4 days natural regeneration equivalent)

Surplus vs Deficit Scenarios

Target 8,000 certificates with Velvet:

• Need 444-533 stamina total
• Have: 78 natural + 89-333 One-Time Mission equivalent
• Result: Break-even or slight surplus

Without Velvet:

• Need 800-1,000 stamina
• Deficit: 300-500 gems in refills OR lower shop expectations

Mission Pass holders:

• +111-167 stamina equivalent
• Comfortable 10,000-12,000 certificate clear without gems

Refill Break-Even Point

Full shop clear (15,000 certificates) with Velvet:

• Need: 882 stamina
• Have: 78 natural + 200-300 One-Time + 111-167 Mission Pass
• Deficit: 304-404 stamina = 253-337 gems
• Strategy: Buy 120 stamina once every 3-4 days (not bulk at event end)

S-tier only (3,000-5,000 certificates):

• Need: 176-294 stamina
• Achievable through natural + One-Time Missions
• Zero gem investment required

Event vs Regular Progression

Priority: 100% stamina to event farming (certificates expire February 11, regular rewards permanent)

Exception: Critical account milestones within 1-2 days (new story chapter, power threshold for raids)

Challenge Chips: Spend on highest-difficulty stages (20-30% better certificate rates). Save for focused weekend sessions.

Mission Completion Checklist

High-Value Daily Missions

• Complete 5 Event Stages = auto-complete via ticket routine (100-200 certificates)
• Deploy [Specific Type] 10 Times = minor team tweak
• Earn 500 Event Currency = 3-4 tickets with Velvet (150-250 certificate reward)

Time-Gated Weekly Missions

• Complete 30 Event Stages = 6 days full ticket usage (miss 2+ days = fail mission, lose 300-500 certificates)
• Earn 3,000 Event Currency = 176-200 stamina with Velvet (4-5 days natural regeneration)
• Participate in Union Raid 15 Times = 2.5 daily attempts across 6-day window (3 free daily = trivial)

Hidden Voucher Sources

• Memory Film: Archives event content (200-400 certificates, 5-10 minutes dialogue skipping)
• First-time stage clears: 50-100 certificates per new stage (600-1,200 total from stages 1-12)
• Social missions:Send 5 Friend Supports (50-100 certificates, 30 seconds)

Mission Synergy

Triple-synergy team: Velvet + Cocoa + Ade simultaneously completes Deploy Supporter Types,Use Wind Code Nikkes,Deploy Bonus Nikkes

Union Raid timing: Schedule during event days to satisfy Complete Union Raid + Log In During Event Period

Weekend batch: Challenge Chips + Clear High-Difficulty Stages + Earn X Currency + Deploy Specific Types

Common Mistakes

Overfarming

Players reaching 15,000 certificates by day 9-10 continue farming through habit. Certificates expire February 11 with zero carryover—surplus provides zero value.

Solution: Set target certificate count based on shop list. Once reached, redirect stamina to regular progression.

Poor Shop Selection

Buying C-tier items first creates 500-1,000 certificate shortfalls for S-tier items at event end.

Solution: Always purchase S → A → B → C. Create shopping list before event, track daily accumulation.

Ignoring Time-Limited Windows

• Union Raid: January 30-February 5 only (6 days). Missing = lose 270-324 certificates
• Coordinated Operation Ziz: January 30-February 1 (2 days). Missing = lose associated rewards permanently
• Weekly missions: Reset at intervals. 90% completion then reset = wasted progress

Solution: Calendar reminders for time-limited windows. Finish weekly missions before deadline.

Stamina Mismanagement

10-ticket cap: Login every 48 hours prevents waste. Every 3-4 days = lose 5-10 tickets (75-180 certificates)

Challenge Chip hoarding: Accumulating 10 chips then lacking time before February 11 = expired chips

Day 1 refills: Purchasing stamina before completing One-Time Missions wastes gems

Solution: Daily login habit. Spend chips every 3-4 days. Complete missions first, calculate deficit, then purchase exact stamina needed.

Catch-Up Guide: Late Start Recovery

Calculating Deficit

Starting February 3 (5 days late):

• Lost: 25 Event Tickets + 5 Challenge Chips
• Certificate deficit: 450-540 (tickets) + 75-90 (chips) = 525-630 total
• Missed One-Time Missions: 800-2,000 certificates
• Total deficit: 1,325-2,630 certificates = 78-155 stamina = 65-129 gems

Compare against target:

• S-tier only (3,000-5,000): 1,325-deficit manageable
• Full clear (15,000): 2,630-deficit requires significant gems or reduced expectations

Intensive Schedule

1. Login exactly at reset (15:00 UTC+9)
2. Spend all 5 tickets immediately
3. Login 24 hours later for next 5 (prevents cap waste)
4. Purchase 120 stamina (100 gems) every 2-3 days (not bulk at end)
5. Prioritize Challenge Chips (20-30% better rates than tickets)

Partial Clear Prioritization

If full clear impossible:

• Shift to S-tier-only targeting
• Calculate exact requirements for must-haves
• Accept cosmetics/C-tier as lost causes
• Velvet Sensual Rabbit costume = zero gameplay value, skip for skill books

Focus on longest alternative timelines: 6-month item > 1-month item

Emergency Last-Minute Push

Final 48 hours before February 11:

• Calculate exact deficit: 500 certificates ÷ 17 (Velvet rate) = 29 stamina = 25 gems
• Avoid panic-buying: 600 stamina (500 gems) often overshoots by 1,000-2,000 certificates

Within 200-300 certificates with 6 hours left: 200-certificate deficit = 17 gems (trivial). 3,000-certificate deficit = 250 gems (evaluate if items worth investment).

Player Type Strategies

Ultra-Casual (10 min/day max)

Routine: 5 tickets auto-battle (3 min) + login rewards (1 min) + Union Raid if active (5 min) = 9 min

Target: 8,000 certificates (S-tier only)

Requirements with Velvet: 471 stamina = 78 natural + 200-300 One-Time + 2-3 refills (240-360 stamina) = 200-300 gems total

Skip: B/C-tier, cosmetics, Challenge Chips (weekend batch), weekly missions >15 min

Standard Player (20-30 min/day)

Routine: Full tickets (5 min) + Union Raid (5 min) + 1-2 Challenge Chips (5 min) + daily missions (5 min) + social (2 min) = 22 min

Target: 10,000-12,000 certificates (S + A-tier)

Requirements with Velvet: 588-706 stamina = 78 natural + 200-300 One-Time + 111-167 Mission Pass + 1-2 refills (120-240) = 100-200 gems

Skip: C-tier, duplicate cosmetics, low-efficiency consumables

Completionist (Full clear)

Routine: Max efficiency farming (30 min) + all missions (10 min) + team testing (10 min) + social (5 min) = 55 min

Target: 15,000+ certificates (complete shop)

Requirements with Velvet: 882+ stamina = 78 natural + 200-300 One-Time + 111-167 Mission Pass + 3-4 refills (360-480) = 300-400 gems

Purchase: Everything (S/A/B/C-tier). Aim 16,000-17,000 for comfortable surplus.

Late Joiner (Starting Feb 5, 6 days left)

Available: 30 tickets (5/day × 6) + 6 Challenge Chips + reduced One-Time Missions

Realistic Target: 5,000-6,000 certificates (S-tier only)

Requirements: Velvet mandatory, all tickets daily, 2-3 refills (240-360 stamina) = 200-300 gems

Strategy: Day 1 complete all One-Time Missions → calculate deficit → purchase refills spread across days → S-tier only → accept A/B/C unattainable

Post-Event Planning

Voucher Expiration

Pro Maid Certificates expire February 11, 2026 23:59 UTC+9:

• Zero grace period
• No conversion to regular currency
• No carryover to future events
• No compensation for unused certificates

Event shop closes simultaneously. Complete purchases by February 10 to avoid server congestion.

Event-Exclusive vs Permanent

Permanently unobtainable after February 11:

• CG FATAL MAID (Stage 1-12 clear)

Reduced availability:

• Velvet: Remains in standard SSR pools at 0.08-0.1% (vs 2% during event)

May return at inflated prices:

• Velvet Sensual Rabbit costume: Future costume shops at 1,500-2,000 gems (vs Mission Pass bundle value)

Next Event Prep

Typical cycle: 3-4 weeks. Next major event likely late February/early March 2026.

Post-event priorities:

1. Rebuild gem reserve (if spent 300-400 on refills)
2. Daily missions, arena rewards, story completions
3. Analyze Fatal Maid performance for optimization

Resource stockpiling:

• 30 Code manuals daily (390 total): Invest in Velvet for future event bonuses OR save for next bonus Nikke
• Stamina refill items: Stockpile for next event (higher value during time-limited periods)
• Build 500-1,000 gem emergency reserve

FAQ

How many Pro Maid Certificates can F2P players earn?

F2P without bonuses: 8,000-10,000 certificates. With Velvet (+60%): 12,000-15,000. Mission Pass premium: +2,000-3,000. Assumes daily login and full ticket usage across 13 days (January 29-February 11, 2026).

Minimum daily playtime for S-tier rewards?

5-10 minutes: Spend 5 tickets on auto-battle (3 min), claim login rewards (1 min), Union Raid free entries when active (5 min). Maintained across 13 days = sufficient certificates for irreplaceable rewards with One-Time Mission completion.

Which shop items to prioritize first?

(1) Event-exclusive skill books/molds (never return), (2) Limited materials (3-6 month timelines), (3) Character materials for active units, (4) Cosmetics after gameplay items. CG FATAL MAID (Stage 1-12) = permanently unobtainable after February 11.

Can players complete without gem refills?

With Velvet targeting S-tier only (3,000-5,000 certificates): Yes, natural regeneration + One-Time Missions sufficient. Without Velvet or targeting full clear (15,000): Requires 200-400 gems in refills. Mission Pass holders: +2,000-3,000 certificates significantly reduces/eliminates refill need.

What happens to unused certificates after February 11?

All certificates expire permanently 23:59 UTC+9 February 11, 2026. Zero carryover, conversion, or compensation. Event shop closes simultaneously. Complete purchases by February 10 to avoid technical issues. Surplus certificates = zero value—stop farming once target items purchased.

Can late starters secure important rewards?

Starting 5-7 days late: S-tier items still obtainable through intensive farming. 5-day delay = 450-540 certificate deficit (62-124 gems to recover). 7-day delay = double gap. Strategy: Complete all One-Time Missions immediately, calculate deficit, purchase refills spread across remaining days, focus S-tier only, accept full clear impossible.