The biggest Ghostbusters gathering returns to Portsmouth – bigger, louder, slimier!
Planning is already underway for Mass Hysteria 2026, and trust us – it’s going to be one for the history books. Expect new challenges, new faces, and even more proton-charged fun. Keep an eye on our socials for venue announcements, registration dates, and how you can take part in the biggest Ghostbusters gathering yet.
The year we made history at Portsmouth Comic Con!
Mass Hysteria 2025 took over Portsmouth Comic Con across 3–4 May 2025, transforming the Guildhall into a full-on Ghostbusters hub. Hundreds of fans, families, and fellow franchises joined forces for an unforgettable weekend of proton packs, laughter, and fundraising.
We welcomed the Southend-on-Sea Ghostbusters and many other UK franchises, hosted kids’ ghost hunts, cosplay contests, raffles, and live talks. Together, we raised an incredible total for Cancer Research UK and broke our own attendance record.
Thank you to everyone who joined us, supported us, and helped keep Portsmouth ghost-free!
The event that started it all.
Mass Hysteria 2024 was our first large-scale charity meet-up – a day that brought together Ghostbusters from across the UK at Portsmouth Comic Con. The energy, the smiles, and the slime set the tone for every event that followed.
From interactive ghost hunts to photo ops with Ectos and packs, it was a weekend full of fun and purpose. And most importantly, it raised vital funds for Cancer Research UK.
A huge thank-you to everyone who made 2024 the perfect launch pad for what became a South Coast tradition.