Creating sketches of secondary NPCs for game graphics

Creating Sketches of Secondary NPCs for Game Graphics

Secondary NPCs are a large part of the visual content of any game. Merchants, guards, townspeople, regular enemies: they're not examined closely, but there are many of them, and they create the feeling of a living world. If they all look alike or contradict the visual style—it's immediately apparent, even if the player can't explain why.

Work with NPCs is a different task than work with key characters. Full render with expressions sheet is not needed. What's needed are rapid, clear, production-ready sketches.

How NPC Concepts Differ from Key Characters Technically

A key character is unique geometry, unique textures, unique rig. Most game NPCs work through a variation system: base mesh with a set of modular elements (head, torso, legs, accessories) that combine in different ways. This gives diversity while controlling polygon budget and texture atlas budget.

NPC sketch must account for this system. An artist drawing each NPC as a unique character creates an illusion impossible to realize in production without enormous budget. The right approach: develop a modular system and draw sketches based on it.

For a "city dwellers" group it might look like this: 3 head variants, 4 torso variants, 3 pants/skirt variants, set of accessories (bags, headwear, tools). From 3×4×3 = 36 combinations + accessories you get enough diversity to fill a market district.

Process of Creating NPC Sketches

Defining archetypes. Before drawing—a list: what NPC categories are needed, what's their role, in which locations they appear, how important is their readability at 15+ meters distance. Enemies must read as threat immediately; merchants—as neutral; quest NPCs—must stand out against background.

Developing modular system. Define body parts / costume parts that will vary. Write down constraints: what can combine, what can't (for visual and technical reasons).

Sketch work. For secondary NPCs, full renders are not needed. What's needed: clean line drawing front + back (or front + 3/4), color zones flat color, notes on material type. Sometimes—size comparison sheet, to show NPC ratio to main character and between each other. This is important for proportion consistency in 3D.

Variations. For each archetype—2–4 variations showing the range without violating visual style. Not "this NPC is like this," but "here's the range where NPCs of this type can be."

Tools: Procreate for rapid line work, Photoshop for final refinement and color pass, Figma if modular system needs to be communicated in structured way with component grid.

Typical case: for open-world RPG, we needed to cover 8 NPC categories (peasants, warriors of two factions, merchants, criminals, nobility, clergy, children). We didn't develop 8 characters, but 8 modular systems with 3–4 variations each. Total: about 60 sketch sheets, providing foundation for production of 150+ unique NPCs through combination.

Timeline

Cost is determined after analyzing number of categories, variability requirements, and format for handoff to 3D team.