Open now · By request
SLOPArena playtest
by Binoui
SLOPArena is a free 3D platform fighter. Rack up damage, launch your friends off the stage, and settle it online with rollback netplay. Made by one developer, open source, and proudly a little janky.
It's free to ask. The developer chooses who gets in.
- Access
- By request
- On playtest since
- Oct 1, 2026
- Planned release
- Coming soon
- Developer
- Binoui
- Platforms
- Windows
- Players
- Multiplayer, Online PvP, PvP, Single-player
- Languages
- English
How to join the SLOPArena playtest
- Open the game's Steam page with the Request access button. Sign in to Steam if it asks.
- Request access to the SLOPArena playtest there. It's free and doesn't commit you to anything.
- The developer lets players in, often in batches, so it can take a while. Steam emails you when you're in, and the playtest appears in your library.
New to playtests? How Steam playtests work
How AI is used
SlopArena is a non-profit open source game created by a solo developer. AI was used extensively during development for various tasks such as research, brainstorming, planning, coding, analysing. Some assets were bought, some were generated to reduce costs. Generated assets are seen as placeholder, especially character models.
The developer's own words, from Steam.
About SLOPArena
SLOPArena is a 3D platform fighter. Every hit raises your damage, and the higher it climbs, the further the next hit sends you. Knock your friends off the stage before they do it to you.
Five fighters, each with a full moveset and four specials.
- FightGuy. Loves punching stuff. But also kicking stuff.
- Manki. There's nothing a few explosives can't fix.
- Wibou. He studied the blade. A lot.
- Sir Bonk. Sir Bonk do bonky bonks.
- Nyx. A witch with another side.
More fighters are on the way.
Seven stages to fight on and fall off: Table Manners, Splash Deck, Slop Pit, After Hours, Last Stop, Log Off and Hamster Habitat.
Online fights use rollback netplay, so matches stay responsive. Open a room, invite friends through Steam, chat, and watch the replay afterwards.
Not every fight needs a winner.
- Slopball. Keep the ball in play under the floodlights and chase your best return combo.
- Courses. Break every target and reach the finish as fast as you can.
- Training and the Fighter's License. Learn the moves before the slop learns you.
SLOPArena is free to play and open source, made by one developer. The code is on GitHub. It's still in playtest: expect jank, report it, and watch it get fixed.
From the game's Steam page.
