Glossary term Retention
Autonomy, Competence, Relatedness
The three psychological needs from self-determination theory: a sense of meaningful choice and control (autonomy), a sense of getting better and making progress (competence), and a sense of connection and belonging (relatedness).
Where you see this in practice
The mechanics that lean on it
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Achievements / Milestones
Named, permanent markers of progress or behaviour that the user collects over time.
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XP / Leveling
An experience point system where users accumulate points through actions, eventually reaching level thresholds that unlock rewards or status.
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Clans / Guilds
Structured cooperative groups with internal roles, shared goals, contribution tracking, and collective rewards.