The following tiles were created by running Life on a torus (joined edges). Image dimensions are 100x100 or 125x125 pixels and the files are five to eight kilobytes in size. They are free for any use.
The following are various generations of B235/S3 between 400 and 615. The sepia tone version of each tile appears below. See Tile Gallery 1 for the black-and-white versions.
I experimented a bit with coloring the tiles before deciding on my current favorite sepia tone. The full set can be found in Tile Gallery 2. All are from rule B235/S3.
These are 100x100 from generation 412:
These are generation 1000 at 125x125: