...We are talking about thousands of recipe tweaks, a massive questbook with over 3000 quests, unique world generation, custom mods coded for the pack, custom Thaumonomicon pages, and many more. The main intentions of the pack are a long-lasting experience and tying mods together in a progressive fashion, making it feel more like a single game than a compilation of mods thrown together. To reach this goal, GT New Horizons is using the tiers (basically ages of technology) from GregTech and allocates the content of other mods to a fitting point within the progression. Starting in the Stone Age you will barely be able to survive until you get your first steam machines and, eventually, reach electricity.