Uncommon · Tier II · Base game

Pile of Books

% Crit ChanceEngineering

Structured effects, restated

What one copy changes

Structures Can Crit

Changes Structures Can Crit by +1.

The recorded ownership limit is one copy.

% Crit Chance

Changes Crit Chance by +5 percentage points.

The recorded ownership limit is one copy.

Engineering

Changes Engineering by +3 points.

The recorded ownership limit is one copy.

Stat references: % Crit Chance · Engineering

Purchase-time direct weapon metric

Your before-and-after DPS

Weapon Tier

Current player state

Enter your current values before buying Pile of Books. Player stats use the same device-local values as the weapon pages.

% Attack Speed % Crit Chanceitem input or output % Crit Damage % Damage % Dodge % Life Steal % Speed Armor Curse Elemental Damage Engineeringitem input or output Harvesting Luck Max HP Melee Damage Player Level Range Ranged Damage

Using zero bonus player stats and zero item counters

Chain Gun goes from 65.48 to 169.03 expected primary-target DPS.

Direct DPS change +103.55 DPS +158.1%

What the comparison includes

Both sides use the shared expected primary-target, pre-mitigation direct-DPS engine. The after side adds fixed global-stat changes and the declared count/stat-scaled changes shown on this page. It includes staged damage rounding, crit expectation, projectile count, shooting duration, and steady-state mean cooldown.

It excludes enemy armor, target density, positioning, misses, overkill, burning, explosions, spawned attacks, temporary effects without a fixed duration state, conditional procs, target debuffs, and weapon-scripted damage changes. A displayed zero therefore means zero within this stated direct metric, not zero value in every combat situation.

Zero-stat baseline, highest available tier