The broad umbrella for imagined differences in scale, including giant, tiny, growing, shrinking and environment-based perspectives.
Back to the glossaryFantasy & performance
Size fantasy
Also known as giant or tiny fantasy · macrophilia · microphilia
A fantasy focused on exaggerated differences in body size, scale or power. It is commonly explored through imagination, art, camera perspective or role-play rather than literal physical change.
SourcesJoyal, Cossette & Lapierre (2015), adult fantasy surveyLehmiller et al. (2023), contemporary sexual-fantasy reviewvan der Hoort, Guterstam & Ehrsson (2011), experimental body-scale illusion studyDunkley & Brotto (2020), BDSM consent reviewSexual Offences Act 2003, section 74WHO ICD-11 clinical requirements (2024)
Fantasy & performance
In brief
A change of scale can change the story without changing consent.
Size fantasy uses impossible or exaggerated scale—being giant, tiny or differently proportioned—to frame adult imagination, art or role-play. The appeal may involve awe, protection, vulnerability, authority, transformation, visual contrast or simply the unreality of the premise. Macrophilia and microphilia are community labels for different directions of scale-focused interest, but neither label reveals a person's preferred role, motivation or wish to act. This page concerns only consensual adults and non-graphic fictional representation.
A community term usually centred on giant or greatly enlarged figures. It does not specify gender, role or a single power dynamic.
A community term usually centred on tiny or greatly reduced figures. It may describe interest in being, observing or imagining the smaller figure.
Attraction to a real adult's ordinary stature or build. It may overlap aesthetically, but it is distinct from impossible changes of scale.
What research can—and cannot—show
Direct peer-reviewed research on size fantasy as a distinct adult interest is extremely limited. Joyal, Cossette and Lapierre surveyed 1,516 adults about 55 fantasy themes and found wide variation across adult fantasy generally, but their fixed list did not isolate giant or tiny fantasy. Their study therefore supports caution about labelling fantasy content as inherently deviant; it cannot supply a prevalence estimate, demographic profile or explanation for size fantasy.
Lehmiller and colleagues' contemporary review likewise describes sexual fantasy as diverse and methodologically difficult to measure. Neither general fantasy research nor online popularity can show why a particular adult has this interest, whether it is central to them or whether they want to enact any part of it. Search counts, community membership and commissioned artwork are especially poor substitutes for representative prevalence data.
Scale, perspective and meaning
A size contrast can suggest protection, surrender, control, admiration, fear, humour, tenderness or transformation, and the same image may carry several meanings at once. Giant does not automatically mean dominant, and tiny does not automatically mean submissive. Some adults identify with one scale; others alternate viewpoints or focus on buildings, landscapes and other fictional environments rather than a role.
In a non-sexual laboratory experiment, van der Hoort, Guterstam and Ehrsson used first-person visual perspective and matched sensory cues to create temporary ownership illusions involving miniature and giant artificial bodies. Participants' judgements of object size and distance changed with the apparent body scale. This helps explain why perspective and embodiment can make fictional scale feel perceptually vivid, but it does not investigate sexual motivation, identity or clinical outcomes.
Objects, media and accessible cues
Miniature architecture, oversized neutral household props, model furniture, scale marks, framed illustrations, written fiction, camera composition and adult-coded avatars can establish relative size without depicting explicit activity. Repetition, texture, lighting, viewpoint and the contrast between an object and its surroundings may matter as much as literal realism. A prop or image has no universal meaning and does not identify its owner.
Text, audio description, tactile models and clearly labelled scale comparisons can provide alternatives when forced-perspective images or virtual reality are inaccessible. Any camera or avatar work should preserve privacy and avoid age ambiguity. Virtual or photographic representation changes appearance only: it does not make a real body able to withstand impossible weight, force or environmental conditions.
Consent, wellbeing and clinical distinction
For partnered adult role-play, agreement should cover the fictional roles, language, touch, emotional tone, images, audience and how to return to ordinary interaction. Dunkley and Brotto's review identifies negotiation and continuing communication as recurring BDSM consent practices, while also showing that consent is contextual rather than guaranteed by a label. In England and Wales, section 74 of the Sexual Offences Act 2003 defines consent through choice, freedom and capacity; other UK jurisdictions have their own law.
An unconventional adult fantasy is not a paraphilic disorder merely because its scale is impossible or its imagery is unusual. WHO guidance distinguishes disorder through features such as marked distress, significant impairment, serious risk or non-consent. This entry does not diagnose individuals, treat shame caused solely by social stigma as proof of disorder or claim that fantasy predicts behaviour.
Non-graphic examples
What the umbrella may include
- An adult enjoying a story in which an ordinary room becomes an immense imagined landscape.
- Two adults agreeing to use giant and tiny character titles in a private, non-graphic role-play.
- An artist using adult-coded silhouettes beside model buildings to suggest impossible scale.
- An adult preferring written or audio fiction because literal visual representation is not important to the fantasy.
- Partners pausing a scale-themed scene when its power language stops feeling comfortable and returning to ordinary conversation.
Reviewed 30 August 2026
Keep exploring.
This detailed field note uses the best available evidence without treating one community sample as universal. Evidence limits and UK context are stated where relevant.
Prepared by The UK Kink Guide editorial team. Read the evidence and review methodology.
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