Sentient Species Civilizations Index (FTiandi)

Tech Level of sentient races humanity had made contact with. Scientists estimated that there are more than a few thousand sentient life forms but the SSCI only takes account for civilizations humans made contact with (credit to Halo Nation for the tiers and description).

Tier 7: Pre-Industrial - Tier 7 is one of the most common and stable states, with limited weaponry and environmental threats. Societies tend to be small and scattered, driven by subsistence farming, foraging, or hunter-gathering needs. Technology is limited to simple hand made tools, weapons, or agrarian implements and methods, but a very broad understanding of planetary and solar mechanics is not uncommon.

Tier 6: Industrial - Tier 6 is the outset for massive urbanization. Agrarian societies can remain stable in the pre-industrial stage, but Tier 6 population strain and mechanized food production invariably create political and economic pressures very few can balance. Moving past this usually promises advancement. Some societies improve environmental and medical understanding concurrently with mechanical and transport advancement. Those that do not are frequently doomed.

Tier 5: Atomic - Tier 5 species usually begin focusing on clean energy production. The occasional belligerent species will use atomic energy for weapons, often resulting in mass extinctions. In-atmosphere craft are a hallmark, often leading to manned space flight, albeit on a short-scale.

Tier 4: Space Age - Tier 4 is often the final resting place for species intelligent enough to break free from their cradle's surface only to fill the gulf surrounding it with war. Their comfort-focused technology can include medical advances.

Tier 3: Space-Faring - The species in this tier have efficient Wormhole navigation, mass drivers, asynchronous linear-induction weapons, holocrystal storage and semi-sentient AIs. They have had no outside influence.

Tier 2: Intersteller - The species has the ability to perform exceedingly accurate Wormhole navigation, near-instantaneous communication and man-portable application of energy manipulation.

Tier 1: World-Builders - The species has the ability to manipulate gravitational forces, create AI with full sentience, fabricate super-dense materials, perform super-accurate Wormhole navigation, the ability to create life, and the ability to create worlds

Tier 0: God-like - No species recorded have ever achieved such tier of civilization so it's all speculation. It is suspected that they can travel across galaxies and accelerate the evolution of intelligent life.