The "Tron" edition is a of the original Bombies 180k pack. It maintains the performance-friendly 16x resolution while offering a distinct futuristic aesthetic.
The pack is available on various community platforms and through the creators' official release videos: Bombies [180k] - Tron 16x
The following video provides a detailed look at the 180k collection, including various recolors: The "Tron" edition is a of the original Bombies 180k pack