- Life Objects
- Class 1 Catalog — Stable
- Class 2 Catalog — Oscillating
- Class 3 Catalog — Moving
- Class 4 Catalog — Infinite
The sparks at the rear of the basic spaceships can support other patterns, allowing the whole configuration to move. Tagalongs can also have periods of multiples of four. The [Schick Ship], discovered in 1971, can be perturbed by additional spaceships allowing for the construction of puffer trains.