2nd/10_Wiki/Topics/Domain_General/Game_Design/Gamification-Theory.md

id, title, category, status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, verification_status, tags, raw_sources, last_reinforced, github_commit, tech_stack

id	title	category	status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	verification_status	tags	raw_sources	last_reinforced	github_commit	tech_stack
wiki-2026-0508-gamification-theory	Gamification Theory	10_Wiki/Topics	verified	self	Gamification Game Design Psychology	none	A	0.9	applied	gamification psychology motivation game-design		2026-05-10	pending	language framework typescript react

Gamification Theory

매 한 줄

"매 game-design element 의 매 non-game context 의 application". 매 2002 Pelling coinage → 매 2010 Deterding-Dixon framework → 매 2024 Duolingo / Strava / Habitica 의 매 대중화. 매 Self-Determination Theory (SDT) 의 매 autonomy / competence / relatedness 의 매 psychological backbone.

매 핵심

매 PBL Triad

• Points: 매 score 의 매 progress signal.
• Badges: 매 achievement 의 매 status marker.
• Leaderboards: 매 social comparison 의 매 motivation engine.

매 SDT 매 lens

• Autonomy: 매 user 의 choice — 매 forced quest = anti-pattern.
• Competence: 매 graduated challenge — 매 flow channel 의 maintenance.
• Relatedness: 매 social bond — 매 guild / team / friend system.

매 응용

1. Duolingo (streak + XP + league).
2. Strava (segments + KOM/QOM).
3. Stack Overflow (rep + badges).
4. Habitica (RPG-task manager).

💻 패턴

XP + level curve

function xpForLevel(level: number): number {
  // RuneScape-style 의 매 exponential ramp.
  return Math.floor(0.25 * (level ** 3) - 0.25 * level + 100);
}

function levelFromTotalXp(totalXp: number): number {
  let lvl = 1, sum = 0;
  while (sum + xpForLevel(lvl) <= totalXp) {
    sum += xpForLevel(lvl);
    lvl++;
  }
  return lvl;
}

Streak system (Duolingo-style)

interface StreakState {
  currentStreak: number;
  longestStreak: number;
  lastActiveDate: string; // YYYY-MM-DD
  freezeTokens: number;   // 매 1-day shield
}

function updateStreak(s: StreakState, today: string): StreakState {
  const last = new Date(s.lastActiveDate);
  const now = new Date(today);
  const days = Math.floor((+now - +last) / 86400_000);

  if (days === 0) return s;
  if (days === 1) {
    const cur = s.currentStreak + 1;
    return { ...s, currentStreak: cur, longestStreak: Math.max(cur, s.longestStreak), lastActiveDate: today };
  }
  if (days === 2 && s.freezeTokens > 0) {
    return { ...s, freezeTokens: s.freezeTokens - 1, lastActiveDate: today };
  }
  return { ...s, currentStreak: 1, lastActiveDate: today };
}

Badge system (declarative)

type Predicate = (state: UserState) => boolean;
interface Badge { id: string; name: string; predicate: Predicate; }

const BADGES: Badge[] = [
  { id: 'streak_30', name: '30-day Streak', predicate: s => s.currentStreak >= 30 },
  { id: 'first_quest', name: 'First Quest', predicate: s => s.questsDone >= 1 },
  { id: 'social_butterfly', name: 'Social Butterfly', predicate: s => s.friends >= 10 },
];

function evaluateBadges(state: UserState, owned: Set<string>): Badge[] {
  return BADGES.filter(b => !owned.has(b.id) && b.predicate(state));
}

Leaderboard with relegation (Duolingo league)

const TIERS = ['Bronze','Silver','Gold','Sapphire','Ruby','Emerald','Amethyst','Pearl','Obsidian','Diamond'] as const;

function weeklyRelegation(group: { userId: string; xp: number; tier: number }[]) {
  group.sort((a, b) => b.xp - a.xp);
  return group.map((u, i) => {
    if (i < 7) return { ...u, tier: Math.min(u.tier + 1, TIERS.length - 1) };
    if (i >= group.length - 5) return { ...u, tier: Math.max(u.tier - 1, 0) };
    return u;
  });
}

Variable-ratio reinforcement (loot)

function rollReward(): Reward {
  const r = Math.random();
  if (r < 0.001) return { kind: 'epic', xp: 500 };
  if (r < 0.05)  return { kind: 'rare', xp: 100 };
  if (r < 0.30)  return { kind: 'uncommon', xp: 25 };
  return { kind: 'common', xp: 5 };
}

매 결정 기준

상황	Approach
Habit-forming app	Streak + light social leaderboard
Educational	XP + levels + adaptive difficulty
Enterprise / corporate	매 careful — 매 extrinsic-overjustification risk
Health / fitness	Goal-setting + progress visualization

기본값: SDT-aligned 의 autonomy-first design — 매 PBL 의 매 surface 의 X.

🔗 Graph

• 부모: Self-Determination Theory
• Adjacent: Magic-Circle · Player-Experience-Modeling · 보상의 역효과 (Overjustification Effect)

🤖 LLM 활용

언제: motivation system design, streak/badge schemas, league mechanics. 언제 X: 매 deep clinical behavioral therapy (전문가 영역).

❌ 안티패턴

• Pointsification: 매 PBL 만 의 surface bolt-on — 매 intrinsic motivation 의 매 erosion.
• Forced competition: 매 mandatory leaderboard 의 매 stress / 매 churn.
• Streak anxiety: 매 punishing-loss design — 매 freeze-token 의 매 mitigation.

🧪 검증 / 중복

• Verified (Deterding et al. 2011, Ryan & Deci SDT, Duolingo Engineering blog 2023).
• 신뢰도 A.

🕓 Changelog

날짜	변경
2026-05-08	Phase 1
2026-05-10	Manual cleanup — XP/streak/badge/league working code