code/modules/power/supermatter/supermatter_variants.dm 
| /obj/machinery/power/supermatter_crystal/engine | Normal SM designated as main engine. |
|---|---|
| /obj/machinery/power/supermatter_crystal/shard | Shard SM. |
| /obj/machinery/power/supermatter_crystal/shard/engine | Shard SM designated as the main engine. |
| /obj/machinery/power/supermatter_crystal/shard/hugbox | When you wanna make a supermatter shard for the dramatic effect, but don't want it exploding suddenly |