However , in 2015 a period - 120 gun in Life with fewer live cells ( but a larger bounding box ) was discovered .
For many years this glider gun was the smallest one known in Life , although other rules had smaller guns .
In 2015 a period - 120 gun in Life with fewer live cells ( but a larger bounding box ) was discovered .
For many years this glider gun was the smallest one known in Life , although other rules had smaller guns .