Hi, I’m Leon! I research video game law, particularly the regulation of loot boxes, gacha, and other gambling-like monetisation mechanics in video games that offer random rewards. I am trained in English law and have been Called to the Bar of England and Wales. I use empirical legal research methods to assess whether companies are complying with various rules in different countries through fieldwork, and I advise on how compliance could be improved.
I also conduct traditional, doctrinal legal research and psychology studies, including surveys and experiments. I am passionate about open science: I preregister research methods, share data, and even conduct registered reports (including likely the first one in the world in the legal discipline). I also dabble in some research on gameplay time and videogaming ‘addiction’ and the intersections between cryptocurrencies, NFTs, gaming, and gambling.
I am actively involved in advising on policymaking across the world. I have been invited to testify before an Australian House Committee. My research has been referenced (twice!) in the House of Lords and relied upon by UK, US, EU, Spanish, Belgian, Dutch, Swedish, Austrian, Australian, and Brazilian policymakers and regulators. The Belgian Minister of Justice has publicly accepted my research critical of his government.
I put my research results into practice by making complaints against companies either through relevant regulators or directly. Through my actions, many key precedents in video game advertising regulation have been established in the UK, and companies have been fined in the EU for non-compliance. Companies and industry self-regulators have taken direct compliance and remedial actions following my research, e.g., amending the app store listings of many popular games to ensure consumer protection.
My award-winning research has received worldwide coverage in over 550 media features by The Guardian, The BBC, The Times, CNBC, NPR, RTÉ, The SMH, Ekstra Bladet, Politiken, El Español, El Economista, Der Standard, Het Nieuwsblad, HLN, RTBF, ČT24, TASS, SCMP, NME, The Daily Beast, New Scientist, Thanh Niên, and leading video game media, e.g., GamesIndustry.biz, GameSpot, IGN, Eurogamer, and Game Developer, amongst others.
I was recognised as a Forbes 30 Under 30 and a Berlingske Talent 100 for my policy advocacy.
I have won multiple research and impact awards, a prestigious Danish grant, and multiple ECR grants, totalling over £71,000 in value. Current projects focus on using EU law (e.g., the Digital Services Act) to scrutinise gambling and video game advertising using social media ad repositories. I also hope to use data protection law (e.g., the GDPR) to access research data that the industry refuses to share publicly fearing that the results will be contrary to their commercial interests.
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Leon Y. Xiao, LLB, LLM, FRSA, FRAsiaticS, FRSPH, AFHEA
Barrister, The Honourable Society of Lincoln's Inn (2024)
Talent 100, Berlingske (2024)
EliteForsk-rejsestipendiat, Danish Government (2024)
30 Under 30, Forbes (2023)
Future Class, The Game Awards (2022)
Game Changer, GamesIndustry.biz (2021)
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Contacts and Social Media
Email: leon@beclaws.org
Bluesky: leonxiaoy.bsky.social
Twitter: @LeonXiaoY
LinkedIn: Leon Xiao
ORCID: 0000-0003-0709-0777
Conflict of Interest Statement: link
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Attending soon:
24–26 April: AGRI 2025, Banff, Canada
20–21 May: British DiGRA 2025, Birmingham, UK
26–28 May: Nordic DiGRA 2025, Turku, Finland
7–10 June: CGSA/ACÉJ 2025, Online
16–17 June: CAGR 2025, Glasgow, UK
30 June–4 July: DiGRA 2025, Malta
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I have been invited by the Department for Culture, Media and Sport (DCMS) of the UK Government to provide advice on its technical working group for loot boxes and the Video Games Research Framework. I was also invited to advise the Danish Competition and Consumer Authority, the US Federal Trade Commission (FTC), and the Dutch Authority for Consumers and Markets, amongst many other policymakers and regulators around the world. My research was referenced on behalf of the UK Government in the House of Lords to support its regulatory position (Hansard: HL Deb 13 Oct 2022, vol 824, col 890); during debates in the Lords on the Online Safety Bill (Hansard: HL Deb 17 July 2023, vol 831, col 2152); and extensively in evidence to an Australian parliamentary committee and the Committee’s eventual report (pp. 138–146). My legal analysis of EU consumer protection regulations has been incorporated into the UK Advertising Standards Authority’s guidance on advertising in-game purchases (pp 9–10) and the UK Government’s response to the loot box call for evidence (paras 202–207). I was cited in class action complaints filed in California and two Spanish consultation papers on loot boxes. I co-won the impact prize at the 2023 annual conference of the Society for the Study of Addiction. I have also been invited to advise NGOs, such as UNICEF España.
I hold law degrees from Durham University and City, University of London and also studied on exchange at the National University of Singapore. I am a Fellow of the Royal Society of Arts (FRSA), a Fellow of the Royal Society for Public Health (FRSPH), and an Associate Fellow of the Higher Education Academy (AFHEA). Previously, I was a Lord Denning Scholar at The Honourable Society of Lincoln’s Inn and held visiting appointments at KU Leuven (Belgium), The Jagiellonian University (Poland), Queen Mary University of London (UK), Stanford Law School (US), University of York (UK), Manchester Metropolitan University (UK), University of Nottingham Ningbo (China), Yonsei University (Korea), Leiden Law School (the Netherlands), and the University of Bristol (UK).
Recent News
30 November 2024: My PhD thesis is available now via: https://doi.org/10.31237/osf.io/af8ev.
29 November 2024: The BBC replicated my research method (following consultation! ❤️) and found that the most popular mobile games continue to break advertising rules on loot boxes (the requirement to disclose their presence in any advertising applies under industry self-regulation, advertising regulations, and consumer law): https://www.bbc.co.uk/news/articles/c748ww9y9nno.
9 November 2024: My first study using social media ad repositories (Meta and TikTok) to check compliance with UK advertising regulations (whether video game adverts disclose in-game purchasing and loot box presence) was published in Computer Law & Security Review: https://doi.org/10.1016/j.clsr.2024.106069.
5 November 2024: The Journal of Behavioral Addictions has published my commentary on a paper about how young people reacted to Chinese video game regulations: https://doi.org/10.1556/2006.2024.00061. The original paper omitted important details and context about other regulations that previously affected young people. My commentary sought to correct the public record.
25 August 2024: Our paper on illegal loot boxes whose random prizes can be traded between players and converted into real-world money has been published in International Gambling Studies: https://doi.org/10.1080/14459795.2024.2390827.
23 July 2024: A comprehensive overview of loot box regulation around the world (updated to the end of 2023) is available in the Gaming Law Review via: https://doi.org/10.1089/glr2.2024.0006. Thanks to the AFSG and Greo for open access funding.
10 July 2024: The UK advertising regulator upheld my complaint in Ruling A23-1239057 Electronic Arts Ltd: https://www.asa.org.uk/rulings/electronic-arts-ltd-a24-1239057-electronic-arts-ltd.html. This precedent established that video game companies must prominently and clearly disclose the presence of loot boxes, rather than disclose using obscure methods, in video game advertising.
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