- #01 0E0P metacell (by Adam P. Goucher): a unit cell which doesn't require a background grid of OFF cells to function, allowing unusual classes of patterns such as quadratic replicators and RROs to be imported into CGoL from other rules.
- #02 42883M (by Adam P. Goucher): a recording-breaking methuselah, discovered using apgsearch.
- #03 Jormungant's G-to-H (by Jormungant): a 2G-to-H converter with a short recovery time, allowing the optimisation of numerous guns.
- #04 Quinti-Snarks (by Tanner Jacobi): period-quintupling reflectors useful for guns.
- #05 Period-33 glider gun (by Arie Paap and Matthias Merzenich): the first true period-33 gun.
- #06 Period-52 glider gun (by Dave Greene, Matthias Merzenich, Adam P. Goucher, Chris Cain, and Entity Valkyrie): the first true period-52 gun.
- #07 Reverse caber-tosser (by Adam P. Goucher, Dave Greene, and Chris Cain): a complex mechanism which theoretically allows any glider-synthesisable pattern to be synthesised in just 35 gliders, by encoding the pattern's complexity into the distance between the gliders rather than their quantity.
- #08 Sierpinski triangle generator (by Luka Okanishi): a breeder that outputs gliders in the shape of a growing Sierpinski triangle.
- #09 Sir Robin (by Adam P. Goucher and Tomas Rokicki): a (2,1)c/6 spaceship, the first elementary knightship discovered in CGoL.
- #10 Bronco (by Tanner Jacobi): the second elementary G-to-H to be discovered, following the venerable syringian TJ/JT tradition -- discovered by Tanner Jacobi and named by Jeremy Tan;
- #11 New self-constructing spaceships (by Dave Greene): including a loopship and HashLife-friendly variants of the Orthogonoid and Demonoid (no giraffeship yet);
- #12 Stable line crosser (by Dave Greene and Goldtiger997): a modernised rehash of David Bell's periodic circuitry for transmitting a glider across a line of cells;
- #13 Cottonmouth (by A for Ampere): a pushalong for the c/10 copperhead spaceship;
- #14 Fast Universal Regulators (by Dave Greene): ingenious use of pulse dividers to reduce the period of the drive gun of a universal regulator;
- #15 5c/9 signal injector (by Rhombic, Simon Ekström, and Chris Cain): a method of transforming Herschels to 5c/9 drifters with a recovery time of 62;
- #16 Minstrel 4 (by Entity Valkyrie): the first manually-assembled knightship;
- #17 New high period oscillators discovered from symmetrical soup searches (by carybe)
- #18 Self-constructing strict volatility-1 oscillator compiled by Goldtiger997, with a record-low V value of 3,506,910;
- #19 Camelship (by Chris Cain): a self-constructing spaceship with a new step distance, (3,1), based in part on the volatility-1 oscillator but with a unique design component, a loop-crossing recipe-switching signal;
- #20 c/2 diagonal telegraph recipe (by Martin Grant): a 140-glider recipe to create a detectable c/2 diagonal signal traveling non-destructively along a very^N long barge or ship;
- #21 Goldtiger997's Amazing 2 in 1 Reusable Multipurpose Minstrel Remover and Detector™ (by Goldtiger997);
- #22 Period-doubling fireship tagalong (by christoph.r)
- #23 Infinite distinct diagonal spaceships and infinite distinct orthogonal spaceships guns (by Adam P. Goucher and Goldtiger997)
- #24 Huge 2D-extensible wick-supporting pushalong (by Hartmut Holzwart): minimum length of over a thousand cells.
- #25 p9 bouncer (by Matthias Merzenich, carybe, and Noam Elkies): can reflect a p27 glider stream using a p9 oscillator found with apgsearch the same day.
- #26 p3 bumper (by Arie Paap and Tanner Jacobi): the first reflector to work at p39. It also enabled the construction of a smaller p57.
- #27 The first non-monotonic 2c/5 ship (by Arie Paap, Matthias Merzenich, and Bullet51)
- #28 Turing Machine Simulator (by Michael Simkin)
- #29 p46 gliderless LWSS gun (by Nathaniel Johnston): the smallest known gliderless LWSS gun.
- #30 p4 bouncer (by Arie Paap): the fastest known p4 reflector.
- #31 p6 180-degree reflector and related guns (by Arie Paap, Tanner Jacobi, and Jormungant)
- #32 New honeyfarm hasslers [1], [2], [3] (by Tanner Jacobi and Matthias Merzenich)
- #33 New mid-period (7-10) sparkers [1], [2], [3], [4], [5], [6], [7], [8] (by Dongook Lee, Josh Ball, Martin Grant, Aidan F. Pierce, carybe, and Bullet51)
- #34 p18-21 pseudo-period LWSS/MWSS/HWSS guns (by Chris Cain, Adam P. Goucher, Entity Valkyrie, 2718281828, and Goldtiger997): the previous lowest known pseudo-period *WSS gun was p22.

We will use the same voting system as the 2016 and 2017 competitions:

Vote only for the patterns you like, and give each of them 1, 2, or 3 stars depending on how much you like them. You can vote for your own patterns if you want. Here is an example vote:

#01 *

#02 **

#04 ***

#08 *

The voting will close two weeks after the creation of this post.

EDIT: Voting is now closed!

EDIT by dvgrn: Here's the final readable vote tally.