Combat Online is a straightforward browser multiplayer shooter: pick a class or loadout, join a lobby, and fight across a rotation of compact maps in team deathmatch and objective modes. It's built for speed — matches start immediately and last a few minutes.
It doesn't try to be a simulation. Weapons are readable, time-to-kill is short, and the maps are small enough that you're never far from the fight, which is exactly what a browser shooter should be.
Yes — it runs free in the browser with no download and no account required.
Yes, team deathmatch and objective modes alongside free-for-all, across a rotation of maps.
Yes, with nothing to install. It needs a live connection for multiplayer.