Below is an idea outline I wrote for what the mod is, how it should work and what it would add to the game. Far from final obviously, so feel free to contribute ideas or suggestions of your own that would make the mod more interesting. Also feel free to poke holes in things that are downright impossible. As I said, my modding experience for Factorio is 0, so the idea is purely theoretical in nature.
About Tiberium
Tiberium is an alien substance that functioned as the primary resource in the Command & Conquer RTS game series, as well as being central to the series’ plot. It was sent to Earth by an alien species in 1995 in an attempt to terraform the planet and extract the planet’s resources.Tiberium most commonly comes in the form of a green crystal. These crystals grow in the ground and spread themselves through underground veins, turning almost any matter it touches into more of itself. The ionizing radiation it gives off is lethal to all carbon based life, though any lifeforms mutated by Tiberium thrive in its presence. It grows by extracting the nutrients and minerals from the soil, leaving it a barren wasteland while the elements it leeches on become part of its crystal form. The minerals, like iron and copper, can be extracted from the Tiberium with a specific chemical process, making it a highly valuable, but also dangerous commodity.Tiberium can also appear in liquid form. While this takes many decades to appear naturally, chemical processing of Tiberium can yield its liquid state as a side product. Liquid Tiberium is highly unstable and can magnify the force of an explosive many times over. It can also function as a power source.
Gameplay design
For the average Factorio player Tiberium should act as both a blessing and a curse. The fact that it damages not only the player, but also any structures or vehicles, means that finding a Tiberium field on the map becomes a problem to be dealt with. Ignoring a Tiberium field for too long will result in being cut off from other resources, or losing room to expand all together. In the long run it has the potential to become even more dangerous than the biters when not adequately dealt with. The only real way to deal with the threat of Tiberium is to harvest it before it can surround you. Luckily there are ways to process Tiberium into something useful.The industrial process is largely liquid based, and involves reclaiming the various different ores from the crystals, which can then be fed into the regular production chain. The side product, Tiberium Gas, is then used to produce Liquid Tiberium in the more advanced production chain.
Liquid Tiberium can be infused with existing power sources or weaponry to make them more powerful. The weaponry in particular is a double edged sword, as using any of the explosive weapons will seed a new Tiberium field at the point of impact that then has to be dealt with. This makes the weapons a poor choice to clear land for expansion, but a good choice to clear Tiberium Biter nests where Tiberium already exists.
End products always use their respective lower tier as an ingredient, and thus incorporate ore, oil and uranium production chains to get to the highest tier of Tiberium products.
Gameplay mechanics
Tiberium Crystals (ore)- Ionizing radiation damages almost everything, including trees, biters, player, buildings, etc.
- To stay as true to the original concept as possible, Tiberium would have to be harvested with specialized vehicles from the Programmable Vehicles mod. For players who do not wish to use that mod there should be a setting to prevent Tiberium from damaging miners, belts or power poles. If the Programmable Vehicles mod is installed only those vehicles are immune to Tiberium damage.
- Requires a special type of miner that is built with steel instead of iron.
- Spreads slowly across the map. Each tile of Tiberium that has an empty tile next to it where it can spread has X% chance to spread there every minute. This means that Tiberium fields will grow faster the bigger they become.
- Destroys biter nests by proximity.
- Biters that create a new nest next to or on top of a Tiberium field will be changed to Tiberium Biters, who have more HP, do more damage and are not damaged by Tiberium.
- By default Tiberium will spread around existing resource fields without converting them. An optional setting could allow existing resource fields to be entirely converted for an increase in difficulty.
- The growth of Tiberium fields can be slowed with walls. The walls would first have to be destroyed by the Tiberium before it can grow further. There are no methods of stopping Tiberium spread entirely as that would defeat much of the risk vs reward balance of the mod, and would turn Tiberium into an overpowered super ore.
- Can ore be made to spread underneath an existing miner? If yes, a wall of miners would be a valid containment method. If no, a solution would be needed to prevent players from simply building a wall of miners to stop Tiberium from spreading.
Research & Tech
Basic Tiberium Processing250 x Automation, Logistic, Chemical
Prereq: Chemical Science Pack
- Unlocks the Tiberium Miner to harvest Tiberium. 5 x Advanced Circuit, 5 x Iron Gear, 10 x Steel. Not damaged by Tiberium.
- Unlocks Basic Tiberium Processing recipe. Tiberium crystals are smelted into Tiberium sludge in a refinery. 100 x Tiberium Crystal + 100 x Steam = 100 x Tiberium Sludge (liquid – bright yellow).
- Unlocks Tiberium Extraction recipe. Tiberium sludge can be used in a Chemical Plant to extract the minerals and gasses. 100 x Tiberium Sludge + 100 x Acid = 40 x Iron Ore, 20 x Copper Ore 10 x Sulfur, 30 x Tiberium Gas (liquid – dark green).
500 x Automation, Logistic, Chemical
Prereq: Basic Tiberium Processing.
Offers no use for Liquid Tiberium on its own, has to be paired primarily with nuclear tech.
- Unlocks Advanced Tiberium Processing recipe. Tiberium gas is compressed in a chemical plant to produce Liquid Tiberium. 300 x Tiberium Gas = 1 x Liquid Tiberium (liquid – very light green, glowing?).
- Crystal to Liquid ratio = 1000 crystals to make 1 unit Liquid Tiberium.
1000 x Automation, Logistic, Chemical, Production
Prereq: Kovarex Enrichment Process, Advanced Tiberium Processing
- Unlocks Liquid Tiberium Fuel. 10 x Liquid Tiberium + 1 Nuclear Fuel = Liquid Tiberium Fuel
- Liquid Tiberium Fuel functions as regular fuel and provides 2.5MJ of energy. 350% vehicle acceleration + 150% top speed.
1000 x Automation, Logistic, Chemical, High Tech
Prerq: Uranium Processing, Advanced Tiberium Processing, High Tech science packs
- Unlocks Liquid Tiberium Fuel Cells. 100 x Liquid Tiberium + 10 x steel + 1 x Uranium Fuel Cell = Liquid Tiberium Fuel Cell.
- Liquid Tiberium Fuel Cells can be burned in a reactor and provides 32MJ of energy (burns for 800 seconds). Are there more interesting things to change other than burn time?
- Reactors using Liquid Tiberium Fuel Cells will spawn a small Tiberium field if they are destroyed (radius of 10 tiles).
Tiberium Weapons
Tiberium Ammo1000 x Automation, Logistic, Military, Chemical, High Tech
Prereq: Uranium Ammo, Advanced Tiberium Processing
- 10 x Uranium Rounds Magazine + 1 x Liquid Tiberium = 10 x Tiberium Rounds Magazine. 56 damage (Explosive).
- 1 x Cannon Shell + 1 x Liquid Tiberium = 1 x Tiberium Cannon Shell. 350 damage (Explosive).
- 1 x Explosive Cannon Shell + 10 x Liquid Tiberium = 1 x Explosive Tiberium Cannon Shell. Has the destructive power of a small nuke. 400 damage (explosion). Area of effect: 20. Spawns a Tiberium field over a 10 tile radius.
2000 x Automation, Logistic, Military, Chemical, High Tech
Prereq: Artillery, Advanced Tiberium Processing, Stronger Explosives 4
- 1 x Artillery Shell + 100 x Liquid Tiberium = 1 x Liquid Tiberium Artillery Shell. Exceeds a standard nuke in damage done. 400 damage (explosion). Area of effect: 40. Spawns a Tiberium field over a 30 tile radius.
10.000 x Automation, Logistic, Military, Chemical, Production, High Tech
Prereq: Atomic Bomb, Advanced Tiberium Processing, Stronger Explosives 5
- 1 x Atomic Bomb + 1000 x Liquid Tiberium = 1 x Liquid Tiberium Missile. Does three times the area of effect damage of a regular nuke. 400 damage (explosion). Area of effect: 105. Spawns a Tiberium Field over an 80 tile radius.
10.000 x Automation, Logistic, Military, Chemical, Production, High Tech, Space
Prereq: Atomic Bomb, Advanced Tiberium Processing, Space Science Pack, Stronger Explosives 6
- 1 x Atomic Bomb + 10.000 x Liquid Tiberium = 1 x Liquid Tiberium Warhead.
- To be launched into orbit via rocket instead of satellite. Gives one launch beacon for remote targeting.
- Does ten times the area of effect damage of a regular nuke and seeds a massive field of Tiberium beyond the radius of the blast. 400 damage (explosion). Area of effect: 350. Spawns a Tiberium Field over a 400 tile radius.