Fissile Matter

Fissile Matter is a hidden, highly radioactive item produced by the Heat Reactor. It does not appear in regular build requirements and currently has no direct construction, ammunition, or crafting uses in normal gameplay. The item functions primarily as a byproduct of Heat Reactor operation rather than a resource for player-facing recipes or weapons.

Fissile Matter has the highest radioactivity of all items, with a radioactivity value of 1.5 (displayed as 150%), exceeding thorium's 100% radioactivity. Its explosive, burning, and shock properties are all 0, so it does not contribute to explosion, fire spread, or discharge effects. The item is marked as hidden (hidden = true), which prevents it from appearing in standard build menus and most crafting interfaces.

• Production: generated exclusively by the Heat Reactor.
• Usage: no direct uses in building construction, ammunition, or synthesis inputs in the current version; it is not required by any regular building recipes.
• Properties: radioactivity 1.5 (150%); explosive = 0; burning = 0; shock/discharge = 0.
• Visibility: hidden from normal player inventories and construction lists.

Because Fissile Matter is an internal or specialty resource tied to Heat Reactor mechanics rather than a player-consumable material, it is primarily relevant when examining reactor outputs and mod or scenario mechanics that reference hidden or high-radioactivity items.