Game Balance Glossary

Plain-language definitions for the game balance, economy, and LiveOps terms used across every guide, checklist, and calculator on this site — alphabetical, each linking to the page that covers it in depth. See the complete game balance guide for the full framework these terms fit into.

Bad-Luck Protection

See Pity Timer — the more general name for any mechanic that caps how unlucky a random system can be for a given player.

Content Cadence

How often new unlocks, zones, or gear tiers arrive as a player progresses. Progression and XP curves should be modeled against content cadence, not against total playtime alone — see the XP curve planning worksheet .

Currency Faucet

Any way currency enters a game economy — quest rewards, daily logins, drops. See the game economy design guide .

Currency Sink

Any way currency leaves a game economy — crafting costs, repairs, cosmetics, upgrades. A healthy economy needs sinks roughly matching its faucets; see the game economy design guide .

D1 / D7 / D30 Retention

The percentage of a player cohort that returns on day 1, day 7, and day 30 after install. Project your own numbers with the retention funnel planner .

Difficulty Curve

How challenge scales over the course of a game relative to expected player power. See the difficulty curve audit .

Drop Rate

The probability that a given item is granted on a specific action (a kill, a chest, a pull). Model drop rate math with the loot drop calculator .

Economy Inflation

When currency faucets outpace sinks, and the average player balance grows unchecked until currency stops feeling meaningful. Project it with the soft currency inflation calculator .

Faucet / Sink Ratio

Total currency entering an economy divided by total currency leaving it over the same period. A ratio near 1.0 generally signals a stable economy; see the game economy health score .

Gacha

A monetization mechanic where players spend currency for a randomized reward from a weighted pool — the same underlying math as loot tables, usually with real-money currency involved. See how to balance mobile games .

Horizontal Progression

Progression that adds new options, utility, or sidegrades rather than strictly bigger numbers — a common lever for slowing power creep. See preventing power creep .

LiveOps

The ongoing operation of a live game after launch — events, seasons, balance patches — as distinct from initial development. See LiveOps economy best practices .

Loot Table

The structured set of possible rewards (and their odds) tied to an action like a kill or chest. See designing better loot tables .

Onboarding

The first play session(s) that teach core mechanics and establish early habits — the most common source of a Day 1-3 retention cliff when it front-loads too much at once. See why players quit after day 7 .

Pity Timer

A hard guarantee that a rare drop occurs by a specific attempt number, capping worst-case bad luck without changing the odds on any individual roll below that threshold. Model it with the loot drop calculator .

Power Budget

A defined ceiling on how much a piece of content is allowed to increase player power, used to prevent each new release from resetting the game's power baseline. See preventing power creep .

Power Creep

When each new release has to outclass the last to feel worth earning, gradually making older content and gear obsolete. See preventing power creep .

Premium Currency

A currency typically purchased with real money, usually gating convenience, cosmetics, or acceleration. See soft currency vs. premium currency .

Progression System

The set of systems (leveling, gear, skill trees) that make a player feel steadily more capable over time. See how to balance RPG progression .

Retention

The rate at which players continue to return to a game over time, typically measured at fixed intervals like D1/D7/D30. See player retention audit .

Skill Tree

A branching set of unlockable abilities or bonuses. Well-designed skill trees avoid "trap" nodes that most players never pick. See how to balance RPG progression .

Soft Currency

A currency typically earned through play rather than purchased, usually gating routine progression. See soft currency vs. premium currency .

Vertical Progression

Progression that increases raw power (bigger numbers) rather than adding new options — the more common driver of power creep when left unchecked. See preventing power creep .

XP Curve

The function describing how much experience each level requires. Shape it with the XP curve calculator .