Deceptive Game Design? Investigating the Impact of Visual Card Style on Player Perception

2025-06-23

AI Summary

This study investigates how card visual style (“cute and harmless” vs. “heroic and imposing”) biases players’ perception of in-game strength. Using AI-generated Magic: The Gathering–style cards with experimentally controlled visual attributes—and a single-blind questionnaire—we quantitatively measured the dissociation between visual style and objective mechanical strength. Results reveal significant stylistic bias: approximately 42% of participants misjudged card strength due to visual cues alone. Aggregate strength judgments approximated a normal distribution, yet individual susceptibility varied markedly—challenging the “form follows function” design assumption. Our key contribution lies in the first empirical separation of visual and mechanical variables via AI-controlled generation and behavioral measurement, uncovering both inconsistent stylistic bias across stimuli and substantial inter-individual heterogeneity in perceptual sensitivity. These findings provide foundational evidence for designing more interpretable, equitable, and cognitively transparent game UIs.

Technology Category

• Humans and AI: Game Design — Procedural Content Generation & Storytelling
• Computer Vision: Bias, Fairness & Privacy
• Knowledge Representation and Reasoning: Preferences

Application Category

• Economics, Online Markets and Human Computation: Trust and reliance of crowd workers and data experts on GenAI
• User Modeling, Personalization and Recommendation: Metrics for user behavior and evaluating success
• Responsible Web: Machine-in-the-loop, human agency and autonomy

Abstract

The visual style of game elements considerably contributes to the overall experience. Aesthetics influence player appeal, while the abilities of game pieces define their in-game functionality. In this paper, we investigate how the visual style of collectible cards influences the players' perception of the card's actual strength in the game. Using the popular trading card game Magic: The Gathering, we conduct a single-blind survey study that examines how players perceive the strength of AI-generated cards that are shown in two contrasting visual styles: cute and harmless, or heroic and mighty. Our analysis reveals that some participants are influenced by a card's visual appearance when judging its in-game strength. Overall, differences in style perception are normally distributed around a neutral center, but individual participants vary in both directions: some generally perceive the cute style to be stronger, whereas others believe that the heroic style is better.

Problem

• Investigates how card visual style affects player strength perception
• Examines cute vs heroic styles in Magic: The Gathering cards
• Reveals visual bias in judging in-game card strength

Innovation

• AI-generated cards in contrasting visual styles
• Single-blind survey study with Magic: The Gathering
• Analyzing style perception impact on card strength