Build an extraction-looter, not the plumbing. This is the deterministic, art-free backend behind the genre. Bring your own art and combat.
- Spatial-grid rig: place and rotate loot into a limited grid. Squeeze in the rare, drop the cheap, and run.
- Risk-and-extract loop: loot weighted containers, watch survival fall as you get greedy, then extract to keep it or die and lose the rig.
- Conditional extractions: timed, fee-gated, item-gated or contested exits.
- Meta economy: traders with reputation pricing, a task chain, a hideout with upgrades and passive income, secure container, insurance and a persistent stash.
- Crafting: consume stash items, deliver the output after a set number of raids.
- Raid Economy Simulator: forecast hundreds of raids on the real engine. Reads survival %, net-per-raid and the profit curve, and warns on punishing, unwinnable or too-generous economies.
- One-click validation, deterministic seeded RNG, exact JSON saves.
- Drop-in uGUI plus an unbreakable IMGUI HUD. Single-player first, async-PvP ready (off by default, no SDK).
Add the ExtractionDemoArena component to an empty scene and press Play for the full loop, then use Tools > Faven Games > Extraction > Create Sample Content to author it as real assets.