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Today's featured article Recursive filter is a toolkit developed by Alexey Nigin in July 2015, which enables the construction of patterns with population growth that asymptotically matches an infinite number of different superlinear and sublinear functions. Toolkits enabling other sublinear infinite series had been completed by Dean Hickerson and Gabriel Nivasch in 2006 - see quadratic filter and exponential filter. Read more... In the news April 25: David Bell constructs the first oblique sawtooth spaceship. April 24: EvinZL posts the first in a series of Demonoid spaceships with four-digit populations, radically smaller than any previous design, due to the hyper-optimized Snarkmaker and further contributions by russellsprouts; a major improvement is a completely new mechanism for a much more efficient construction arm than the standard single-channel design, using a temporary Simkin glider gun to produce slow salvos with less than three input gliders per output glider on average. April 9: russellsprouts publishes a hyper-optimized single-channel Snarkmaker recipe consisting of just 266 gliders -- nearly an order of magnitude improvement over the previous standard 2428-glider recipe that has been used in many self-constructing patterns. Editable news item submissions page • Archive •

Did you know... ... that with the appearance of the 0E0P metacell, the number of periods for which strict volatility 1 oscillators were known went from 12 to infinity? ... that Copperhead is not only the first c/10 orthogonal spaceship ever found, but also remarkably compact for a pattern not discovered until 2016? ... that loafer is the fifth smallest non-flotilla spaceship, but was discovered 43 years after the four spaceships smaller than it? ... that despite being the fourth smallest non-flotilla orthogonal spaceship, loafer did not appear from a single randomly generated soup until 2020? ... that all known glider eaters take at least four ticks to recover to their original state after eating a glider? ... that among Life-like (outer-totalistic) rules, Conway's Life's "near neighbours" B35/S23, B36/S23, and B38/S23 are not explosive, but B37/S23 is? ... that there is roughly one chance in 10^(N/3) that a still life appearing out of random soup will have a population of exactly N cells? ... that the number of still lifes with N+1 bits is roughly 2.48 times larger than the number of N-bit still lifes? ... that the odds of a randomly-chosen 20 × 20 soup pattern being a methuselah that lasts between N and N + 1000 ticks, are roughly the same as the odds that it will last any amount of time longer than N + 1000 ticks? ... that all still lifes up to 17 cells can be synthesized at a cost of less than one glider per cell?           Showing 10 items out of 197 More did you know... Pattern collection The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find: 1756 patterns (including 712 oscillators, 223 spaceships and 375 still lifes); 3561 images (599 animated and 2962 static); Over 3000 downloadable pattern files; Glider syntheses for 1012 patterns. Download pattern collection 6MB .zip archive containing the 5200+ Game of Life RLE pattern files used on the wiki Also available: 38KB .zip archive containing approximately 75 pattern files for other cellular automata