Mathematical Formulas

In 0.2.0, XP and progression use a monster-level-based system with level-difference multipliers and zones. This replaces the previous health-based XP formula.

How the New System Works

Your XP gains depend on two main factors:

Monster level - Base XP scales with the monster’s level (higher level = more base XP).
Level difference - How close the monster’s level is to yours. Fighting monsters near your level gives the best XP; farming much easier or much harder content is heavily penalized.

XP Gain from Mobs

Base XP (Monster Level)

Base XP is determined by the monster’s level:

Base XP ≈ MonsterLevel × √MonsterLevel   (conceptually; implementation may use level² scaling)

Monster Level	Approx. Base XP
1	~1
50	~353
81	~729
100	~1,000

Higher-level monsters give more base XP.

Level Difference Multiplier

The difference between your level and the monster’s level applies a multiplier:

Your Level vs Monster Level	Multiplier	Result
Same level (±0)	1.5×	Best XP!
1–5 levels higher	1.1× – 1.5×	Great XP
6–25 levels higher	1.0×	Normal XP
26–30 levels higher	0.5×	Reduced (50% penalty)
31–40 levels higher	0.4×	Low (60% penalty)
41–50 levels higher	0.3×	Very low (70% penalty)
51+ levels higher	0.2×	Minimal (80% penalty)
1–5 levels lower	1.4× – 1.0×	Good XP
6–25 levels lower	0.96× – 0.2×	Decreasing XP
26+ levels lower	0.1×	Very low (90% penalty, trivial content)

You can disable the underleveled XP penalty (rows where the monster is higher than you) via EnableGapLevelXpReducer: false in config - you will get full XP (1.0×) from higher-level monsters. See Configuration or Difficulty Scaling. Best strategy: Fight monsters within ±25 levels of your level. Same-level or slightly higher (±5) gives the highest bonuses.

Final XP Formula

Final XP = Base XP(monster level) × Level Difference Multiplier × RateExp × ZoneRateExp

Variable	Description
Base XP	From monster level (see table above)
Level Difference Multiplier	From your level vs monster level (see table)
RateExp	Global XP rate from RPGLevelingConfig (default 1.0; e.g. 2.0 = double XP)
ZoneRateExp	Per-zone XP multiplier from ZoneLevelConfig (default 1.0; e.g. 2.0 = double XP in that zone, 0.5 = half). Applied to mob kills and block break XP in the zone.

Example (Level 81 vs Level 81 monster, RateExp 3.0, ZoneRateExp 1.0):
Base 729 × 1.5 × 3.0 × 1.0 = ~3,281 XP per kill.

Block break XP (mining / woodcutting)

XP is awarded when players break eligible blocks (ore/mineral/gem for mining; log/tree/trunk for woodcutting). The formula uses BlockXPBaseMining or BlockXPBaseWood, player level, zone level, RateExp, and ZoneRateExp. See 0.2.0 formulas - Block XP for the full math. Exclusions: In RPGLevelingConfig.json, BlacklistedXPBlocks lists block type IDs that never grant break XP (case-insensitive exact match). Default: Tw_Feed_Carnivore,Tw_Feed_Herbivore (Animal Husbandry feed troughs). Set to "" to allow XP from all eligible blocks. Use EnableBlockXP: false to disable all block-break XP.

Crop harvest XP and Harvest stat

Added in 0.3.9 (The Harvest Moon Update).

Crop harvest XP

XP is awarded when players harvest mature crops (F key / sickle on crop blocks and direct-harvest plants). Uses tier multipliers from HarvestingConfig.json:

harvestXP = BlockXPBaseHarvesting × HarvestTierNMultiplier × playerScale × zoneMultiplier × RateExp × ZoneRateExp × XpRateMultiplier

Variable	Description
BlockXPBaseHarvesting	Base per harvest (default 2.0)
HarvestTierNMultiplier	Tier 1–4 multipliers (defaults 1.0 / 1.5 / 2.5 / 4.0)
playerScale	`1 + (playerLevel - 1) × BlockXPPlayerLevelFactor` from main config
zoneMultiplier	From zone level mid and `ZoneLevelFactor` (same style as block break)
XpRateMultiplier	From XPCurveOverridesConfig.json for the player’s level

Per-player cooldown (HarvestXPCooldownSeconds, default 45) limits XP from the same plant. See Harvesting Config for blacklists and per-crop tier overrides.

Harvest stat (yield procs)

Allocated Harvest points roll for bonus crop stacks on harvest (configured in StatsLevelConfig.json):

doubleChance% = min(HarvestMaxDoubleChance, harvestPoints × HarvestDoubleChancePerPoint)
tripleChance% = min(HarvestMaxTripleChance, harvestPoints × HarvestTripleChancePerPoint)

Triple is only rolled when double does not proc. Double adds 1 extra stack; triple adds 2 extra stacks.

Tame XP

When EnableTameXP is true in RPGLevelingConfig.json, taming a creature awards:

tameXP = calculateXPFromKill(playerLevel, mobLevel, config) × TameXpMultiplier

Uses the same monster-level and level-gap math as kills. Role blacklist: BlacklistedTameEntityRoles.

Zones and Monster Level Ranges

The world is divided into zones with different monster level ranges:

Zone	Name	Monster Levels	Best For
1	Emerald Grove	1 – 25	Early game (Level 1–30)
2	Howling Sands	25 – 50	Mid game (Level 20–55)
3	Borea	50 – 75	Late game (Level 45–80)
4	Devastated Lands	75 – 100	End game (Level 70–100)
5	Skylands	85 – 100	Max level
6	Poisonlands	90 – 100	Ultimate challenge

Monster Level Variation (±5)

Monsters in a zone have ±5 level variation around their base. Same zone, same “type” of monster can be different levels (e.g. 30, 33, 37, 40). This adds variety and keeps combat less predictable.

Zone Colors on the HUD

The HUD shows the current zone and its color based on how it fits your level:

Color	Meaning	XP	Action
White	Too easy (−26+ levels)	10% (90% penalty)	Move to a harder zone
Green	Good match (±25 levels)	100–150% (full + bonuses)	Stay here
Orange / Red / Purple	Too hard (+26+ levels)	20–50% (50–80% penalty)	Come back when higher level

Pro tip: If the zone name is green, you’re in the right place for the best XP.

XP Required for Level

Total XP required to reach a level:

XP_required = LevelBaseXP × level^2.5 + LevelOffset   (level ≥ 2)
XP_required(1) = 0

The exponent 2.5 (not squared) gives a steeper curve: easier early levels, much harder at high levels.

Variable	Description
level	Target level
LevelBaseXP	Base for level formula (default 150.0 in config; examples below use 50.0)
LevelOffset	Added to total XP per level. Only affects XP needed for 1→2; for 2→3 and beyond it cancels out when taking the difference.

Examples (LevelBaseXP = 50.0, LevelOffset = 0.0):

Level	XP Required
1	0 (starting)
2	283
10	15,811
50	883,884
100	5,000,000

Per-range XP-earned multipliers (XP curve overrides)

XP earned and level-up cost can be scaled per player-level range via XPCurveOverridesConfig.json. XpRateMultiplier applies on top of RateExp / ZoneRateExp; LevelCostMultiplier scales XP needed for the next level (HUD, /lvl info). Levels outside any range use 1.0 for both. Example: [{From: 80, To: 100, XpRateMultiplier: 3.0, LevelCostMultiplier: 0.5}] triples XP earned and halves grind to level up at levels 80–100.

XP Needed for Next Level

XP_needed = XP_required(level + 1) - XP_required(level)

Progression and Monsters per Level

Approximate monsters to kill per level when fighting same-level monsters (RateExp 3.0, LevelBaseXP 150, default formulas). “XP per level-up” is the range for one level step in that band (e.g. 1→2 needs ~850 XP, 9→10 needs ~10,500 XP). Total XP to go 1→10 is much higher (~47,400).

Level Range	XP per level-up (min – max)	XP per Kill	Monsters per level-up
1 → 10	849 – 10,984	4.5 – 122	189 – 90
20 → 30	34,809 – 60,089	403 – 703	86 – 85
50 → 60	134,566 – 172,496	1,591 – 2,039	85
80 → 82	270,849 – 277,111	3,220 – 3,281	84
90 → 100	326,656 – 372,192	3,845 – 4,433	85 – 84

Total (1 → 100, same-level farming): ~9,000 – 12,000 monsters (order of magnitude), depending on exact rates and level choices.

Stat Points

Same as 0.1.9:

Stat points per level: 5 (configurable)
Max level: 100
Total at max: (100 − 1) × 5 = 495 stat points

See Configuration for StatPointsPerLevel, StatValuePerPoint, and related options.

Summary

Topic	0.2.0 behavior
XP source	Monster level (not max health)
Multiplier	Level difference (you vs monster)
Zones	6 zones with level ranges; HUD shows zone + color
Variation	±5 monster level within a zone
Best XP	Same-level or ±5 levels; green zones
Penalties	Too easy (white) or too hard (orange/red/purple)

For difficulty scaling (monster damage, HP, level-gap combat), see Difficulty Scaling.

Getting Started

Guides

Classes & Passives

Usage

Mod Content

Configuration

Troubleshooting

For Developers

Changelog

Mathematical Formulas

Mathematical Formulas

How the New System Works

XP Gain from Mobs

Base XP (Monster Level)

Level Difference Multiplier

Final XP Formula

Block break XP (mining / woodcutting)

Crop harvest XP and Harvest stat

Crop harvest XP

Harvest stat (yield procs)

Tame XP

Zones and Monster Level Ranges

Monster Level Variation (±5)

Zone Colors on the HUD

XP Required for Level

Per-range XP-earned multipliers (XP curve overrides)

XP Needed for Next Level

Progression and Monsters per Level

Stat Points

Summary

​Mathematical Formulas

​How the New System Works

​XP Gain from Mobs

​Base XP (Monster Level)

​Level Difference Multiplier

​Final XP Formula

​Block break XP (mining / woodcutting)

​Crop harvest XP and Harvest stat

​Crop harvest XP

​Harvest stat (yield procs)

​Tame XP

​Zones and Monster Level Ranges

​Monster Level Variation (±5)

​Zone Colors on the HUD

​XP Required for Level

​Per-range XP-earned multipliers (XP curve overrides)

​XP Needed for Next Level

​Progression and Monsters per Level

​Stat Points

​Summary

Mathematical Formulas

How the New System Works

XP Gain from Mobs

Base XP (Monster Level)

Level Difference Multiplier

Final XP Formula

Block break XP (mining / woodcutting)

Crop harvest XP and Harvest stat

Crop harvest XP

Harvest stat (yield procs)

Tame XP

Zones and Monster Level Ranges

Monster Level Variation (±5)

Zone Colors on the HUD

XP Required for Level

Per-range XP-earned multipliers (XP curve overrides)

XP Needed for Next Level

Progression and Monsters per Level

Stat Points

Summary