Game Mechanics
Deep dive into Universal Tower Defense game systems, formulas, and hidden mechanics.
✨ Trait System
Traits are random modifiers that can dramatically boost unit power. Use Rerolls to change traits. Higher rarity traits have lower drop rates.
| Trait | Drop Rate | Effect |
|---|---|---|
| Ruler | 0.1% | +200% Damage, -20% Cooldown, +30% Range, Limits to 1 placementLikely |
| Duelist | 0.8% | + 35% Boss damage, +25% Crit rate, +20% RangeLikely |
| Sacred | 0.3% | +25% Damage, +25% Range, -10% SPA, -15% CostLikely |
| Fortunate | 1% | (Farm Only trait) Increases Income by 20%Likely |
| Wizard | 0.5% | +30% DoT Damage, -15% SPA, +20% RangeLikely |
Tip: Duelist is listed at 0.8%, Ruler at 0.1%, and Fortunate at 1% with +20% income for economy units. Fortunate pity remains legacy needs review.
🌟 Etherealization System
Etherealization is a system that consumes duplicate units to strengthen the original unit, unlocking unique passives and increasing stats. Normal units use up to E6; Secret units are tracked separately up to E7.
How It Works
- • Fuse duplicate units into your main copy
- • Each fusion increases Ethereal Level (E1 → E6)
- • Duplicate requirements and effects are Legacy model values
- • Unit identities are anchored to canonical records where a match exists
Priority Units
- • #1 Speed Cart / Fast Cart: Economy is critical. More money = stronger team.Legacy
- • #2 Virtual Idol / Miku: Best buffer. Buff potency scales everything.Legacy
- • #3 Kenpachi / Berserker: #2 DPS. Perfect all-rounder with debuffs.Legacy
- • #4 Kyito: Virtual Realm essential. Duelist trait is achievable.Legacy
- • #5 Ace / Spade: Easy E6. Full AoE. Cost efficient.Legacy
Warning: Secret-unit duplicate requirements and the Secret summon rate (0.00625%) are Legacy values in the current model, not confirmed official odds.
💎 Relic System (Equipment)
Relics provide powerful stat boosts. Each unit can equip Hat, Top, and Bottom pieces. Mythic relics drop from high-difficulty Story Mode and Legend Stages.
Sub-stat Priority
| Stat | Max Value | Notes |
|---|---|---|
| critRate | +37.5% | Main stat cap. Crit interaction guidance remains a model note.Likely |
| critDamage | +120% | High-value main stat for crit-focused units.Likely |
| dotDamage | +75% | High-value main stat for burn and DOT units.Likely |
| buffPotency | +45% | Accessory main stat for support and buff units.Likely |
| cooldown | -22.5% | Bottom main stat; broad DPS value for skill-heavy units.Likely |
| damage | +60% | General main stat for damage scaling.Likely |
| range | +30% | Bottom main stat for support coverage and placement flexibility.Likely |
Do
- • Prioritize Mythic relics with up to 10 tracked main stat caps
- • Use Lv.15 caps from the canonical relic dataset
- • Match relic stats to unit role
Avoid
- • Crit Rate gear on non-crit units
- • 3-substat relics (waste upgrades on new stats)
- • Accidentally selling equipped relics
Model Note: Crit Rate interaction guidance remains legacy-derived. Keep relic calculations labeled until in-game evidence confirms the exact stacking formula.
🔥 Evolution System
Evolve units to unlock stronger forms. Unit identities are matched to canonical records where possible; takedown counts, material quantities, and farming assumptions remain Mixed data.
Requirements
- • Takedowns: 3,000-6,200 in the governed model
- • Materials: Universal Fragment, Burning Fragment, Ocean Fragment, Spade Donuts
- • Special Items: Unit-specific materials remain legacy-derived
Best Farming Spots
- • Takedowns: Story Act 1 (Best spot for takedown farming. Simple enemies, fast clear.)
- • Materials: Half-hour Challenge (Gives 3 Rerolls. Better for materials (10% drop rate) than pure takedowns.)
- • Special Items: Legend Stage 3 (Marine) (Drops Spade Hat for Ace evolution. ~10-14.5% drop rate.)
Tip: The current model says higher difficulty does not increase takedown count; use fast clears for takedown farming and treat material-rate assumptions as legacy-derived.
💰 Economy System
Speed Cart (Fastcart) is the tracked economy unit. Its identity is canonical; income, upgrade costs, and Virtual Realm card effects remain Mixed model values.
Speed Cart
12,000 gold per wave at upgrade 2; placement limit 1
Fortunate Trait
+20% income, 1% listed probability
Etherealization
E6: +60% income in the legacy model
Virtual Realm Tip: The Lovers - Increases all unit placement limit by +1. Allows placing 2+ Speed Carts.Source status: Legacy.
👹 Boss Mechanics
Bosses in Featured Challenges and late-game content have special immunities that must be handled properly. This section is a gameplay note that still needs in-game evidence capture.
Immunity Phase
- • Bosses start immune to Slow and Stun
- • Must break their shield/armor first
- • Use armor-piercing units (Kenpachi, Ace) to break immunity
- • Then apply CC (Shikamaru 10s stun, etc.)
Multiplayer Scaling
- • Boss HP increases with more players (150 solo → 200 duo)
- • Enemy strength also scales up
- • Kill-based mana units (Sun Jin Wu) suffer in co-op
- • Solo may actually be easier than co-op in some cases
📊 Stat Point Allocation
Units gain stat points when leveling up. Optimal allocation depends on unit role. These role recommendations are legacy-derived and should be treated as planning guidance.
| Unit Type | Priority 1 | Priority 2 | Reason |
|---|---|---|---|
| DPS Units | Cooldown | Damage | Cooldown reduction has highest DPS impact for skill-based units. |
| Buff/Support | Range | Cooldown | Larger range covers more allied towers for buffs. |
⚡ Difficulty System
Difficulty and reward summaries below come from the canonical Story mode record where available.
Easy
Can get rare, epic and low chance of legendary relics
Hard
Higher chance of epic and legendary relics, mythic relics obtainable at low chance
Nightmare
High chance for mythic relics, lower chance to get legendary relic
Mode Note: Story difficulty data is Likely. Virtual Realm is tracked as a 30-wave mode with card picks from canonical mode data.