What it is. A first-person immersive sim: hand-crafted levels, a small toolkit of magical verbs (teleport, possess, freeze time, summon), and honest AI + physics that all obey the same rules the player does. The world doesn’t script your route — it simulates, and you route through it.

Player fantasy / why it’s fun. This is my problem, and I own the solution. The joy is the private plan you improvise — Blink to a rafter, possess a rat, drop under a door, freeze a bullet and step around it. The game never says “correct.” It says “that worked.”

Design DNA (the compressed essence)

• Consistent systems over authored answers. Water, height, sightlines, unconsciousness, physics, and time all follow one rulebook. Powers plug into that rulebook, not into special-case triggers. See system-emergent-systems.
• The ≥3-answers contract. Every meaningful obstacle has at least three honest solutions the designer verified — front door, side infiltration, over-the-top, straight murder. Player-chosen, not menu-chosen. Contrast antipattern-fake-choice.
• A verb toolkit, not a gear list. Few powers, each a general operator that combines with every system. Depth is verbs × systems, not count of items. See system-build-diversity, pattern-emergence.
• Honest, readable AI. Guards have vision cones, hearing, alert states, and memory you can read and exploit. The stealth is a legible system, not a coin flip. See system-enemy-ai, system-telegraphs, pattern-readability.
• The world reacts and remembers. Bodies, alarms, and a Chaos meter mean choices leave marks; the level and ending shift under how you played. See pattern-feedback-loops, pattern-meaningful-choice.

Load-bearing structures

What to steal

• The ≥3-answers contract as a design law. Before an obstacle ships, name three honest solutions and prove each is reachable with the toolkit. If you can only find one, it’s a corridor — see antipattern-fake-choice, system-encounter-design.
• General verbs, not special items. Ship 3-5 operators that each interact with every system. Refuse the drawer of single-use gadgets — that road ends at antipattern-feature-soup.
• A shared rulebook. Make the player’s powers, the AI’s senses, and the physics run on the same systems. That’s the seedbed for pattern-emergence and the guardrail against a scripted feel.
• Readable enemy state. Vision cones, alert tiers, and “last known position” you can see and outsmart. Legibility is the whole stealth game — system-telegraphs, pattern-readability.
• A style-tracking consequence layer. Let how the player solved things bend the world (an ending, a faction, the next level’s density). Cheap to author, huge for ownership — pattern-feedback-loops.
• Vertical, over/under connectivity. Every space wants a high route and a low route. Flat space kills the third answer.

What’s just theme (drop it)

• The plague-ridden grimdark whaling city. Atmosphere, not mechanism. Retheme freely — a heist manor, a candy factory, a coral reef. Keep the systems; see world-theme-vectors, world-tonal-juxtaposition.
• First-person / realistic scale. The DNA is systemic verbs, not the camera. Works top-down, 2.5D, or side-on with the same contract. See system-camera-and-controls.
• Magic as flavor. “Powers” are just general operators. They can be gadgets, spells, hacks, or physics tricks — the fiction is skin.
• The morality frame. Chaos-as-guilt is one framing of the consequence layer; a heist’s heat, a factory’s cleanliness, or a garden’s balance work identically. Framing ≠ mechanic.

Composes into

• Genres: genre-immersive-sim (the home), genre-stealth, genre-metroidvania (toolkit gates space), genre-action-adventure, genre-sandbox-survival.
• Systems: system-emergent-systems, system-enemy-ai, system-encounter-design, system-build-diversity, system-map-and-navigation, system-quests-and-objectives.
• Patterns: pattern-emergence, pattern-meaningful-choice, pattern-readability, pattern-feedback-loops, pattern-mastery-and-flow.
• Kin: anchor-shadow-of-mordor (systemic enemies that remember), anchor-rimworld and anchor-minecraft (rulebook-driven emergence), anchor-into-the-breach (readable-state tactics).

Twist seams

• Dishonored but the powers are shared with the guards (perspective) — the AI teleports, possesses, and freezes time too, so every route you plan, they can also walk. Stealth becomes a mind-game against equals; the level is a duel of the same verbs. Leans hard on system-enemy-ai and pattern-fairness-and-trust.
• Immersive sim but non-lethal is the only option, so tools are social (constraint) — no kills, no knockouts; your “powers” are distraction, bribery, disguise, rumor, and misdirection. The obstacle is other minds, and the ≥3-answers contract runs on persuasion instead of violence. See system-dialogue-and-branching, pattern-meaningful-choice.
• Dishonored but one verb, deeply (compression) — ship only Possess (or only Blink) and let a whole game mine its interactions with every system. Depth from combinatorics, not from count. See mechanic-possess, pattern-restraint-and-negative-space.
• Immersive sim but the world resets and remembers your last run (temporal) — a looping day where guards learn the routes you used, forcing new solutions each cycle. Marries the ≥3-contract to anchor-outer-wilds-style knowledge progression.

See also

• Sibling anchors: anchor-shadow-of-mordor, anchor-rimworld, anchor-minecraft, anchor-outer-wilds, anchor-disco-elysium.
• Core systems: system-emergent-systems, system-enemy-ai, system-encounter-design, system-build-diversity.
• Watch out for: antipattern-fake-choice (routes that only look distinct), antipattern-feature-soup (gadget sprawl instead of general verbs), antipattern-false-depth (systems that never actually interact).
• Process: process-the-twist to spin a seam above, process-pillars to lock the ≥3-answers contract as a pillar.
• Verify: stealth legibility and the solve-it-many-ways feel are proven against design/FUN.md#5-·-stealth, not asserted here.