Game · Puzzle, board & word games

Duel!

Epic hand-game duels.

Completely free
Linux
Open source

At a glance

All of Duel! is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Duel! is a modern take on hand-game classics. Challenge the computer in the famous Rock, Paper, Scissors, Lizard, Spock variant or try the expanded RPS-7 mode. Enjoy a clean and intuitive experience designed to feel natural on your desktop. Master all moves and see if you can outsmart the machine. Features: Multiple game modes including Classic, RPSLS, and RPS-7 Visual guides for every game variant Adaptive interface that works on any screen size Full keyboard support for fast-paced gameplay

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 10 November 2026
Last technical check: 8 November 2026
Description from Flathub — AppStream (Flathub)

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