Immersive Virtual Reality Serious Games for Evacuation Training and Research: A Systematic Literature Review

An appropriate and safe behavior for exiting a facility is key to reducing injuries and increasing survival when facing an emergency evacuation in a building. Knowledge on the best evacuation practice is commonly delivered by traditional training approaches such as videos, posters, or evacuation drills, but they may become ineffective in terms of knowledge acquisition and retention. Serious games (SGs) are an innovative approach devoted to training and educating people in a gaming environment. Recently, increasing attention has been paid to immersive virtual reality (IVR)-based SGs for evacuation knowledge delivery and behavior assessment because they are highly engaging and promote greater cognitive learning. This paper aims to understand the development and implementation of IVR SGs in the context of building evacuation training and research, applied to various indoor emergencies such as fire and earthquake. Thus, a conceptual framework for effective design and implementation through the systematic literature review method was developed. As a result, this framework integrates critical aspects and provides connections between them, including pedagogical and behavioral impacts, gaming environment development, and outcome and participation experience measures.

💡 Research Summary

This paper presents a systematic literature review of immersive virtual reality (IVR)–based serious games (SGs) applied to building evacuation training and research, covering indoor emergencies such as fire and earthquake. The authors begin by highlighting the shortcomings of traditional evacuation instruction methods—videos, posters, and live drills—including limited knowledge retention, lack of individualized feedback, and insufficient emotional engagement. They argue that serious games, when combined with IVR, can overcome these limitations by delivering highly immersive, multisensory experiences that promote deeper cognitive processing and realistic behavioral responses.

The review follows a five‑stage systematic protocol (problem formulation, literature identification, quality assessment, evidence synthesis, and interpretation) as recommended by Khan et al. (2003) and Thomé et al. (2016). Two overarching research questions guide the analysis: (1) What are the educational and behavioral outcomes of IVR‑SGs, and how are they measured? (2) What essential elements constitute an effective IVR‑SG for evacuation studies? Eleven sub‑questions are derived, drawing on the triadic game design framework of reality, meaning, and play (Rüppel & Schätz, 2011).

Findings for the first question reveal that IVR‑SGs consistently produce superior learning outcomes compared with conventional methods. Knowledge acquisition is typically assessed via pre‑ and post‑tests, quizzes, and scenario‑completion scores, showing improvements of 15–30 % in most studies. Behavioral outcomes—such as correct route selection, hazard perception time, and physiological responses (heart rate, skin conductance)—are captured through in‑game telemetry, eye‑tracking, and biometric sensors. Participants often exhibit stress responses comparable to real emergencies, which the authors interpret as a sign of heightened realism and risk awareness. Participation experience is evaluated through a combination of subjective questionnaires (presence, immersion, satisfaction) and objective performance metrics (reaction time, error count).

The second question yields a comprehensive design framework that integrates five interrelated domains:

1. Pedagogical Impact – clear learning objectives, alignment with constructivist or simulation‑based learning theories, and built‑in feedback loops.
2. Behavioral Impact – explicit behavior modeling, realistic hazard scenarios, and automated data logging for post‑hoc analysis.
3. Game Environment Development – hardware considerations (head‑mounted displays with high resolution, wide field‑of‑view, low latency to mitigate motion sickness), software choices (Unity/Unreal engines, physics and visual effects), and interaction design (hand gestures, voice commands).
4. Outcome & Participation Measures – definition of both learning and behavioral metrics, integration of subjective and objective assessment tools, and inclusion of long‑term retention tests.
5. Play Elements – narrative storytelling, adaptive difficulty, reward systems, and other gamification techniques to sustain motivation.

The authors discuss several advantages of IVR‑SGs: heightened engagement, the ability to safely simulate dangerous conditions (dense smoke, falling objects), and the automatic collection of rich behavioral datasets for research. They also acknowledge limitations, notably the risk of VR‑induced motion sickness, high equipment costs, the need for specialized development expertise, and the scarcity of longitudinal studies validating transfer of virtual training to real‑world behavior. To mitigate these issues, they recommend user‑centered interface design, low‑cost lightweight HMDs, modular game architectures, and rigorous usability testing.

In conclusion, the paper confirms that IVR‑based serious games represent a promising, yet still emerging, approach for evacuation education and behavioral research. The proposed conceptual framework offers a structured roadmap for scholars and practitioners to design, implement, and evaluate IVR‑SGs systematically. Future research directions include long‑term retention studies, cross‑cultural adaptation of scenarios, integration of diverse demographic groups, and technical refinements to reduce motion sickness while preserving high fidelity.