Marble fight videos that end in a slow-mo knockout
Drop two marbles into a sealed arena for a pure 1v1 — or up to eight for a free-for-all — with five lives each. The spike ball arms whoever grabs it, hearts heal, shields soak one blow, and the final hit triggers a slow-motion kill cam with a winner fanfare. Then the whole fight exports as a clip built for posting daily.
- Free to play
- No credit card
- 9:16 vertical MP4
- Runs in your browser
Exported at 9:16, ready to post
How it works
From idea to shareable clip in three steps
- 1
Set the matchup
Pick your fighters on the hub — two for a pure duel, up to eight for a brawl — each carrying its own skin, name and music into the arena.
- 2
Let them trade lives
The spike ball changes hands, hearts and shields swing the fight, and nothing is scripted: five lives drain until one marble is left standing.
- 3
Post the knockout
The final blow replays in slow motion, then the clip is ready to download. Free exports carry a small watermark; Pro exports are clean.
Features
What you can do
- Five lives per marble in a sealed arena — last one with a life left wins
- Grab the spike ball to arm up; every clean hit takes a life
- Hearts heal, shields soak one blow, freezes lock every rival in place
- Slow-motion kill cam and winner fanfare on the final blow, never before
- The leader's music takes over mid-fight, so the sound tracks who's winning
- Run it as a strict 1v1 duel or a brawl of up to eight marbles
Frequently asked questions
- Is Duality free?
- Yes. A free account gets one battle per day with a watermarked export, no credit card needed. Pro ($7/mo or $56/yr) gives you unlimited battles and clean, watermark-free exports.
- How does a marble win?
- Every marble starts with five lives. Whoever holds the spike ball can take a life with a clean hit, hearts heal lost lives, and a shield soaks a single blow. The last marble with a life left wins — the physics decides, not a script.
- Can I use my own marbles?
- Yes. The lineup you build on the hub — flag skins or your own images and sounds — walks straight into the arena, and each fighter keeps its name and music through the whole battle.
- What format are the videos?
- Each battle exports as a 9:16 vertical MP4 — the full fight, kill cam included — sized for TikTok, Reels and Shorts, and yours to post commercially.
Ready to make one?
Play free in your browser. No install, no credit card. The clips are yours to post, including commercially, and Pro removes the daily limit and the watermark.