In the same way that we experience the real-world through a range of senses, experiencing a virtual environment through multiple sensory modalities may augment both our presence within a scenario and our reaction to it. In this paper, we present Season Traveller, a multisensory virtual reality (VR) narration of a journey through four seasons within a mystical realm. By adding olfactory and haptic (thermal and wind) stimuli, we extend traditional audio-visual VR technologies to achieve enhanced sensory engagement within interactive experiences. Using both subjective measures of presence and elicited physiological responses, we evaluated the impact of different modalities on the virtual experience. Our results indicate that 1) the addition of any singular modality improves sense of presence with respect to traditional audio-visual experiences and 2) providing a combination of these modalities produces a further significant enhancement over the aforementioned improvements. Furthermore, insights into participants' psychophysiology were extrapolated from electrodermal activity (EDA) and heart rate (HR) measurements during each of the VR experiences.

This demonstration presents ``Tainted', a first-person 3D adventure game that enables players to experience a traditional horror folklore using visual-auditory-olfactory interactions. The system consists of a computer to play the game and a smell-emitting module that contains jasmine, pineapple, mango, and banana scents. The information provided by the additional smell stimuli delivers an immersive gaming experience by providing game narrative and signaling predefined game conditions (e.g. imminent threat). Smell stimuli may also help to enhance player's cognition and memory, as well as to invoke emotional responses such as fear and curiosity.