Yes, Lone Sniper is completely free to play online.

How to play Lone Sniper?

You can play directly in your browser using keyboard, mouse, or touch controls.

Can I play Lone Sniper on mobile?

Yes, it works on phones and tablets.

Play

You only have 50 seconds to destroy all the enemies. Act very quickly, take a shot and hide behind cover so as not to come under return fire.