PET SYSTEMS
Companion creatures that are kept, raised, and cared for — collected pets with happiness meters, battle pets with their own progression, cosmetic followers trailing the player.
- SOLO-DEV COST MEDIUM
- TIMING REAL-TIME / TURN
- COMMON IN MMO · SURVIVAL · LIFE-SIM · RPG
World of Warcraft's battle-pet ecosystem grew from vanity collection into a game-within-the-game (250+ pets, their own combat system), Nintendogs and the Chao Garden made care itself the loop, survival games like ARK make taming the progression spine, and countless MMOs and live-service games run pets as the collection economy's soft currency. Designers add pets because they attach players through nurture rather than power: a creature that depends on you (feeding, grooming, leveling) triggers caretaking investment that gear never touches, and collection breadth (rare pets from raids, events, achievements) converts the entire game's content into a pet-acquisition map for collectors. Pets also serve as achievement display — the rare companion at your heels is a worn trophy — and as low-stakes systems for players who want progression without pressure. Key decisions: whether pets have gameplay function (combat assists, gathering bonuses, inventory) or stay cosmetic (function makes pets mandatory for optimizers; pure cosmetics keep them love-only), care obligations and neglect consequences (Tamagotchi guilt retains but also repels), and acquisition sources — bred, tamed, dropped, or bought, each building different economies. Pitfall: pets as checklist entries — when acquisition is everything and the pet does nothing after capture (no behaviors, no interaction, a menu icon that follows you), collection completes and attachment never starts; the difference between a pet and a trophy is that a pet responds to you.
SEEN IN
- WORLD OF WARCRAFT
- ARK: SURVIVAL EVOLVED
- NINTENDOGS