Colossalcon 2025 has officially begun, and fans from across the country have gathered for one of the most unique and vibrant conventions in the anime and geek culture world. Held at the Kalahari Resort in Sandusky, Ohio, this beloved event blends classic anime con elements—like cosplay, panels, and vendor halls—with an indoor and outdoor waterpark, giving attendees a summer experience like no other.
With events already underway, the atmosphere is electric, full of excitement, creativity, and community spirit. Whether you’re a veteran con-goer or a first-time attendee, Colossalcon offers something truly unforgettable.
What Makes Colossalcon So Special?
While many anime conventions focus strictly on panels, autographs, and screenings, Colossalcon stands out thanks to its unique venue and laid-back, resort-style vibe. Taking place from May 28 to June 1, this year’s edition once again transforms the massive Kalahari Resort into a paradise for anime fans, gamers, artists, and cosplayers alike.
What really sets it apart? The setting. Imagine attending a cosplay meetup, then hopping into a lazy river in your swimsuit version of your favorite character. Or watching a dance performance by a talented idol group, followed by a night party around a pool with other fans. It’s this fusion of fandom and vacation that gives Colossalcon its distinct charm.
Beyond the fun-in-the-sun aesthetic, Colossalcon also hosts a wide array of traditional con programming, ensuring that fans get the best of both worlds.
Highlights of This Year’s Convention
The 2025 edition of Colossalcon features a packed schedule with plenty to explore. Here’s a look at some of the highlights already underway and what’s still to come:
- Cosplay Contests and Masquerades – From elaborate armor builds to adorable chibi costumes, Colossalcon’s cosplay scene is a visual feast. The official cosplay contest, happening Saturday evening, showcases the best of the best, judged by experienced professionals and creators in the community.
- Special Guests and Panels – This year’s guest lineup includes voice actors, content creators, cosplayers, and industry professionals. Panels range from Q&As and live dubbing demonstrations to workshops on costume design, wig styling, and prop crafting.
- Anime Screenings and Gaming Rooms – Chill zones for anime lovers include screening rooms featuring a curated list of new and classic series. Meanwhile, the game room is fully equipped with consoles, arcade machines, and tabletop setups for fans of all kinds of games.
- Waterpark Takeovers and Themed Parties – Perhaps the most iconic aspect of Colossalcon is its poolside and waterpark events. Attendees can enjoy water slides, hot tubs, and wave pools during the day, then switch gears to join in themed dance parties and rave nights.
- Artist Alley and Vendor Hall – Whether you’re looking for handmade fan art, enamel pins, custom plushies, or rare manga, the massive vendor hall and artist alley are must-visit spots. Support indie artists and stock up on geeky treasures.
A Celebration of Cosplay Creativity
If there’s one thing Colossalcon is known for globally, it’s the cosplay. And 2025 is proving no different. Social media is already buzzing with photos of stunning costumes, from anime classics like My Hero Academia and Naruto to video game characters, VTubers, and pop culture crossovers.
Swimsuit variants are especially popular here—thanks to the setting—so it’s not unusual to see a beach-ready Sailor Moon or a tropical version of Inuyasha strolling by the poolside. It’s a space where creativity thrives and cosplay experimentation is encouraged, making it one of the most photographed and social media–shared cons in the country.
Community and Vibes: More Than Just a Convention
One of the most important aspects of Colossalcon is the community vibe. While it’s undoubtedly a celebration of anime and geek culture, it’s also a gathering of friends—many of whom reunite here every year. The convention encourages a relaxed, social atmosphere where people can bond over shared interests, collaborate on group cosplays, or just chill in the resort between events.
It’s also increasingly popular with content creators, photographers, and videographers who use the resort’s vibrant scenery and natural light to shoot high-quality cosplay content. For many in the cosplay and anime community, Colossalcon isn’t just a con—it’s an annual pilgrimage.
Looking Ahead: More Fun to Come
With two full days of programming still ahead, Colossalcon 2025 is far from over. Saturday is set to be the busiest day, packed with main events like the cosplay competition, late-night dance party, and signature photoshoots at the resort’s most scenic spots.
Sunday wraps up the festivities with farewell brunches, casual meetups, and final shopping opportunities in the vendor hall. It’s a chance for attendees to wind down and reflect on another year of shared fandom, laughter, and unforgettable memories.
As the 2025 edition unfolds, it’s clear that Colossalcon remains a shining example of how a fan event can combine immersive fun, creativity, and genuine community spirit. Whether you’re diving into your first cosplay debut or catching up with friends over anime debates in the hot tub, Colossalcon delivers a celebration like no other.
And for those who couldn’t make it this year—don’t worry. Colossalcon has sister events in other locations and promises to return even bigger next year.
