Dabrias Multiplyer Ramup

Factorio 2.0 – Dynamic technology cost scaling based on tech‑tree depth.

Overview

Tired of flat multipliers that make early and late technologies equally expensive?
Dabrias Multiplyer Ramup applies a progressive cost multiplier that steadily increases as you advance through the tech tree.

• Technologies near the start keep their original cost (×1).
• Technologies at the end (e.g., Rocket Silo or Solar System Edge) cost up to 50× more (configurable).
• The multiplier scales exponentially between these two points.

This creates a smooth difficulty curve where each tier of science feels meaningfully more expensive than the last, without trivializing early game or over‑inflating mid‑game techs.

How It Works

1. Depth calculation – Every technology is assigned a depth equal to the length of its longest prerequisite chain (root techs = depth 0).

2. Trigger technologies (those without a research cost) can be excluded from the curve – they don’t shift the multiplier.

3. User‑defined endpoints – You choose:

4. initial-multiplier – multiplier at depth 0 (default: 1)
5. final-multiplier – multiplier at the final technology (default: 50)

6. final-technology – the tech that defines the “end” of the curve (blank = auto‑detect deepest tech)

7. Formula – For any tech with depth d and maximum depth D:
   k = d / D (capped at 1 if "go‑beyond" is disabled) multiplier = initial * (final / initial) ^ k

• This gives exponential growth: if final is 50, depth 50% gives √50 ≈ 7×, depth 100% gives 50×.
• If go‑beyond-final-multiplier is true, techs deeper than D continue to grow exponentially (k > 1).

1. Application – The multiplier is applied to:
2. Normal technologies – tech.unit.count is multiplied and rounded up.
3. Infinite technologies – the multiplier is injected into the count_formula so it scales with each level.

Settings

Compatibility

• Factorio 2.0 – fully compatible; no normal/expensive tables used.
• Space Age – fully compatible; the default final tech auto‑detects solar-system-edge when available. You can also manually set "solar-system-edge" if desired.
• Other mods – any technology added by mods will be automatically picked up and scaled according to its depth in the combined tech tree.
• ScaledRecipes – No conflict.
• This mod modifies science pack costs (unit.count / count_formula).
• ScaledRecipes modifies research time (unit.time), plus recipes, mining, power, etc.
• Both can be used together for a fully customized experience.

Installation

1. Download the mod folder or zip.
2. Place it in your %APPDATA%/Factorio/mods (or mods folder in the game directory).
3. Enable it in the main menu under Mods.
4. Adjust the startup settings before starting or loading a game.

Technical Notes

• The mod runs in data-updates.lua to ensure all modded technologies are loaded before modification.
• Infinite technologies (those with count_formula) are handled by inserting the multiplier formula directly, preserving the original progression curve.
• Depth calculation uses recursive dependency resolution – it correctly handles multiple prerequisites and complex dependency graphs.
• If you manually specify a final technology that doesn’t exist, the mod falls back to auto‑detection (with a warning) for known default names like "rocket-silo" or "solar-system-edge". Unknown names will trigger a clear error.

Changelog

For full history, see changelog.txt.

v0.0.1 – Initial release for Factorio 2.0 / Space Age.
- Ported from “Technology Cost Ramp Up Fixed” by kuviboy.
- Removed obsolete normal/expensive handling.
- Improved error handling for final technology settings.

Credits

• Original concept by kuviboy (Technology Cost Ramp Up Fixed).
• Rewritten and adapted for Factorio 2.0 by the Dabrias Multiplyer Ramup team.

Enjoy the climb! 🚀