FRAGEN is a browser first-person shooter with several game modes and a slightly unusual arsenal — including a grenade gun on its own key, which changes engagements at medium range considerably.
It's built for quick matches: no account, fast loading, and maps small enough that you're never far from a fight.
A weapon on its own key that lobs explosives — useful for flushing enemies out of cover or covering a chokepoint, rather than for direct duels.
No — matches can be joined directly with nothing to install.
Yes — it runs in the browser; lower the settings on older hardware.