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Rustback Beetle
All mobs · Dusk prowler · Floater
The Rustback beetle is a territorial native creature with orange wing cases, six legs, antennae and mandibles. It can appear on supported outdoor terrain when the ground is dark enough (light level 7 or lower). Daylight and sufficiently bright placed lights prevent new spawns; existing beetles remain.

A nearby beetle warns you when you approach within five metres. Leave during its roughly 1.4-second warning to avoid provoking it. Remaining nearby or striking it starts an attack. It has 12 health, and a successful bite deals 2 HP before armor.
The bite has an approximately 0.8-second preparation. Step out of reach or obstruct the attack with solid terrain before it lands. Attack with the normal mining/attack button while aiming at the creature; selected weapon damage applies.
Beetles return toward home after being drawn too far away. They do not break terrain or attack machinery, and they currently drop no item when defeated.

Beetles can climb supported vertical walls and pull over a clear upper edge. Wall climbing works while wandering, chasing or returning home. Removing their supporting blocks releases their grip; unsupported gaps and solid overhangs block the route. They cannot crawl across ceilings.
A short wall is therefore not a reliable beetle barrier. Keep distance during the warning and watch for routes over nearby terrain.
Captures: September 13, 2026, stability-review player. The visible fixture isolates the creature and climbing behaviour; it is not a generated structure.
Rivet Reach · © Starbugstone · All rights reserved. These guides describe the current playable alpha.
Rivet Reach field guide
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Tools and durability — faster tiers, remaining uses and worn-tool storage.
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Electric Furnace — smelting and cooking with electricity.
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Lava — deep lakes, buckets and burning hazards.
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Floater — hovering stone enemies and Floater Rock drops.
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Farming and cooking — wild crops, fibre and basic/electric food preparation.
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Food and hunger — eating, saturation and meal planning.
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Mobs — Rustback beetles, Dusk prowlers and Floaters; encounters, combat and persistence.
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Compost — organic surplus, crop acceleration and bin automation.
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Lighting and underground farms — cave openings and growing with torches.
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Fishing — rod crafting, deep source-water ponds, bite timing and fish meals.
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Chickens — lead, breed and raise a persistent flock; collect eggs and cook meals.
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Building and inventory — picking blocks, sorting and farmland harvests.
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Floater spawners — rare cave rooms, lighting and independent cage populations.
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Spawn mechanics — light, floors, distances, natural populations, cage caps and persistent chickens.
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Beds and home spawn — craft a bed, set home and sleep until morning.
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Crates and warehouses — bulk storage, type locks and controller setup.
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Item-pipe routing — editable receiver priorities, compatible destinations and round-robin overflow.
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Weather — clear skies, rain, storms, shelter and saved weather.
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Renewable power — solar panels, wind turbines and parallel battery charging.
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Factory stress-test gallery — actual factory, storm and farm captures from the pre-0.1.0 review.