Movement

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This article details how movement works under the hood in Underrail.

Basics

At its core, Underrail's game engine is real-time with smooth movement. This is converted into discrete square map tiles and combat turns for gameplay purposes.

  • One turn equals 5 seconds
  • Moving the distance of one tile costs 10 MP
  • The unmodified movement speed equals 135 MP

Distances are calculated as two-dimensional Euclidean distances (also known as Pythagorean distances) and movement point costs are rounded up to integer.

Example: Moving one tile diagonally costs 15 MP, moving 10 tiles diagonally costs 142 MP. (Rounded up from 14.1421356237 and 141.421356237 respectively.)

Items and effects that modify movement speed or movement points usually modify both. These values are not automatically converted, they're manually defined on each source of movement modifiers, so they're not necessarily completely consistent.

Real-time

All movement speed modifiers stack additively, except Stealth Mode penalty, which is multiplicative with the others.

Agility, MP/AP, Armor Penalty, etc. have no effect on movement speed.

Movement speed modifiers
Type Source Modifier Notes
Items
Icon Infused Cave Hopper Leather armors Increases movement speed Depends on quality
Icon Tabi Boots Increases movement speed Depends on quality
Icon Strider Boots Increases movement speed Depends on quality, decreases stealth skill
Icon Rathound Regalia Increases movement speed by 10%
Icon Adrenaline Shot Temporarily increases movement speed by 45%
Icon Jumping Bean Temporarily increases movement speed by 40%
Feats
Interloper Reduces Stealth Mode movement speed penalty to 30% allows retaining of some movement points after Stealth Mode
Sprint Increases movement speed by 45%
Strider E Increases movement speed by 15%
Status effects
Chilled Decreases movement speed by 12% per stack 12% is approximate. Might be 12.5% or 1/8Verify
Fatigue Decreases movement speed by 20%
Slowed (Sticky Oil) Decreases movement speed by 20-69%
Slowed (Web) Decreases movement speed by 50%
Lightly Encumbered Decreases movement speed by up to 50%
Heavily Encumbered Decreases movement speed by up to 70%
Completely Encumbered Decreases movement speed by 100% Prevents all movement

Turn-based

This section needs expansion with list of MP sources.

Vehicle mechanics

This section needs expansion with Jet Ski stuff.