JustPlay.LOL was the developer and publisher of 1v1.LOL, and for a few years one of the most-played studios on the web without most of its players ever learning its name. This is a short, accurate history — the previous version of this article was written while the studio was still running and promised a future that did not arrive.
Origins
The company was founded in Ramat Gan, Israel, by brothers Boris and Lior Alterman around 2018–2019. The idea behind it was narrow on purpose: take the one part of Fortnite that competitive players cared about — the build fight — and ship just that, in a browser, with nothing to download. 1v1.LOL went live as a web game in late 2019 and grew almost entirely through school Chromebooks and word of mouth. A Unity build meant it ran on anything with WebGL, which was the whole product.
The catalogue
- 1v1.LOL — the flagship: 1v1 Clash, Box Fight, Zone Wars, Build Fight and a small Battle Royale. Browser first, then iOS and Android, then a Steam release in 2023.
- JustBuild.LOL — the building half on its own: a sandbox for practising ramps, 90s and edits with no one shooting back. Most of its players used it as a warm-up before 1v1.LOL.
- JustFall.LOL — a Fall Guys-style penguin party game, the studio's attempt at something outside the shooter lane.
All three shared a login, a cosmetics shop and a battle pass, which is how the studio made money from games that were free and mostly played by people who could not buy anything.
The Playtika acquisition
JustPlay.LOL was bought by Playtika, the Israeli mobile-casual publisher, as part of a push to diversify beyond social casino titles. The acquisition kept the games running and the team in place, but it also put a small browser-shooter studio inside a company whose measure of success is mobile revenue per user. On that measure a free build-fight game for teenagers on Chromebooks was never going to look good.
The shutdown
In October 2025 the studio announced that 1v1.LOL and its sister games would close on 3 November 2025. Unused currency and items were not refunded. Steam concurrency had fallen under a hundred players in the final months, and the browser audience, while much larger, generated little. The servers went off on schedule. The full story, and what replaced it, is in Is 1v1.LOL shut down?.
What survived
The game client. Because 1v1.LOL was a Unity WebGL build served to browsers, copies of it existed outside the studio, and within weeks a community project called 1v1.LOL Reloaded had rebuilt the server side — matchmaking, parties, progression, ranked — so the original client could play again. That is the version on this site. It is not JustPlay.LOL's work and they have no part in running it; it is what their players built to keep the game alive.
Why it mattered
JustPlay.LOL proved that a competitive shooter could live in a browser tab with no installer and no account, and that a school laptop was a legitimate gaming platform. Almost every "unblocked" games site of the last five years exists because of the audience 1v1.LOL created. The studio is gone; the design decision it made — only the build fight, and make it load in ten seconds — is still the standard the whole genre is measured against.