UI and UX in Games: Building Menus, HUDs, and Feedback Systems

Most players will never notice a well-designed interface. They will just keep playing. That invisibility is the goal of every game user interface (UI) design decision a developer makes.

UI and user experience (UX) are often treated as the same discipline. They are not. UI covers the visual layer: buttons, menus, icons, and heads-up displays. Meanwhile, game UX describes the outcome: how smoothly a player moves through a game, how quickly they understand what is being asked, and how confident they feel doing it.

Over 30% of players abandon games because of poor interface design, not bad gameplay. That number makes the case better than any design principle can.

This guide covers layout, readability, feedback systems, accessibility, and implementation in Unity UGUI and UMG Unreal.

Layout: Visual Hierarchy, Grouping, and Contrast

Every screen in a game communicates a priority order, whether the designer intended one or not. Solid game UI design begins with making that order deliberate.

Visual Hierarchy:

• Critical information belongs where the eye naturally lands. Health bars, ammo counts, and active objectives occupy the corners and edges of the screen because players have been conditioned to check those positions over decades of games. Departing from convention is possible, but it demands a reason.

Grouping:

• Keep related elements close and visually consistent.
• Inventory, quests, and settings belong in distinct sections, not scattered across the same surface.
• Use consistent terminology across all screens. Do not label something "Quests" in one menu and "Missions" in another.
• Any function should be reachable within two to three interactions from any starting point.

Contrast:

• Contrast does the separating work. High-contrast color, legible iconography, and deliberate negative space keep primary information readable and secondary information out of the way.

On heads-up displays (HUDs) specifically, clutter is not an aesthetic problem; it is a functional one. Research shows players direct around 80% of their visual attention to the gameplay area, leaving only 20% for HUD elements. Progressive disclosure is the structural answer to that constraint.

Readability Across Screen Sizes

A game shipping across PC, console, and mobile presents the same game UI design in three stark display conditions. Two practices keep it readable across all of them.

Safe Areas:

• Safe areas protect against overscan on televisions and notch cropping on mobile devices. All text and interactive elements must sit within those boundaries, typically the inner 90% of the screen.

Font Sizing:

• The accepted minimum for in-game text is 16pt.
• Offer scaling options up to 150% to 200% for players who need it.
• A label legible on a studio monitor can become unreadable on a handheld at arm's length.

Both Unity user interface (uGUI) and Unreal motion graphics (UMG) support resolution-aware scaling natively. Building it in from the start costs far less than retrofitting it after shipping.

How to Build Feedback Systems That Players Actually Feel

Animation, Juice, Hit-Stop, and Screen Shake:

This is where functional game UI design becomes memorable game UX.

Juice:

• Juice is the layer of audiovisual feedback that gives player actions weight and consequence. It is not decoration; it is communication. Every confirmed input, every successful action, every failed attempt needs a response that the player can perceive.

Screen Shake:

• Displace the camera for 0.1 to 0.3 seconds on significant impacts.
• Use easing functions to taper off smoothly.
• Map shake intensity to event significance and stay consistent.
• Without restraint, screen shake causes nausea. Calibration is everything.

Hit-Stop:

• A fraction-of-a-second game pause at the moment of major impact, borrowed from traditional animation practice. That brief freeze allows the player to register what just happened. It makes powerful actions feel earned and has become standard in action games because it works.

Particle Systems:

• This comprises dust on landings, sparks on impacts, confetti on completions.
• Reinforce world logic without requiring additional UI.
• Unity's Particle System and Unreal's Niagara handle these with low performance overhead when particle counts are managed.

Menu Feedback: 

• Menu interactions deserve the same attention as gameplay feedback.
• Hover animations and scale shifts on button selection.
• Slide and fade transitions between screens.
• Audio clicks on navigation.

A clunky menu sitting on top of polished gameplay will still cost the game its perceived quality.

Accessibility: The Baseline, not Bonus

Good game UX means the game works for everyone willing to play it. Accessibility expands a game's potential audience by 15% to 20%. Treat these four areas as requirements, not optional additions.

Color-Blind Modes:

• Color-blind modes must account for three main variants. Cover deuteranopia and protanopia, a red-green deficiency affecting around 6% of males. Also cover tritanopia, the blue-yellow variant.
• Never use color as the sole carrier of information. Pair it with icons, text labels, or patterns.
• Test using Color Oracle before shipping.
• Filters that accidentally simulate color blindness rather than compensate for it are a recurring documented failure.

Subtitle Defaults:

• Subtitles should be on by default. They serve far more players than most developers expect: those in noisy environments, non-native speakers, and anyone who simply prefers reading dialogue.
• Customizable font sizes with genuinely large upper limits; some titles now allow up to 52pt.
• Opaque background options for contrast.
• Speaker identification labels.
• Emotional tone descriptors before dialogue lines, as introduced in Assassin's Creed Shadows in 2025, which also benefit players navigating nonverbal subtext.

Remappable Controls:

Full remapping should include the following:

• Toggle versus hold options.
• One-handed layout presets.
• Adjustable stick sensitivity and dead zones.
• Per-game remapping even where console-level remapping exists.

Contrast Standards: 

• Contrast ratios should meet WCAG 2.1 AA standards at minimum.
• 4.5 to 1 contrast ratio for normal text.
• 3:1 contrast ratio for large text and UI components.
• Add reduced-motion options for players sensitive to screen shake and rapid transitions.

Implementation: Unity uGUI, UI Toolkit, and UMG Unreal

Choosing the right tool is as much a part of game UI design as the design itself.

Unity: Two Active Systems

Unity uGUI, the Canvas-based system available since Unity 4.6, offers the following:

• Mature ecosystem with deep asset store support.
• Direct Animator integration for transitions.
• Stronger choice for animated, visually complex HUDs.
• Performance limitations for complex, data-heavy screens.

UI Toolkit, the document-based system introduced in Unity 2019.1, offers the following:

• Unity extensible markup language (UXML) for structure and Unity style sheet (USS) for styling.
• Better performance for inventory systems, skill trees, and quest logs.
• Recommended by Unity for new projects not constrained by Unity uGUI legacy.

A hybrid approach, Unity uGUI for animated HUDs and UI Toolkit for menus, is common in professional studios.

Unreal: UMG

UMG Unreal pairs a visual editor with automatic data binding to C++ and Blueprints and built-in animation tools. It is the default choice for Unreal projects because it lets designers build and iterate on UI without writing code. Strong game UX outcomes in Unreal typically start with UMG Unreal's Blueprint-driven workflow, which keeps iteration fast.

Quick Implementation Reference

• For screen shake, Unity uses a singleton CameraShake component on the main camera, callable from anywhere in the project. Unreal handles this through the Camera Shake Source component in UMG.
• For hit-stop, Unity triggers a brief Time.timeScale reduction on impact and resets it via a coroutine. The Unreal equivalent is Blueprint time dilation in UMG Unreal.
• For menu animations, Unity UGUI supports DOTween or Animator. In UMG Unreal, the built-in animation tools handle this directly inside the editor.

The Practical Order of Work

Follow this sequence on every project:

1. Define your layout hierarchy on paper before opening the engine.
2. Set safe areas and anchor systems before building any element.
3. Build the HUD first, then menus.
4. Test readability at minimum and maximum font sizes before adding animation.
5. Run color-blind simulation and contrast checks before external playtesting.
6. Add juice, screen shake, hit-stop, and particle feedback after the interface is structurally stable.
7. Integrate accessibility from the first screen, not as a post-launch patch.
8. Watch real players use the interface. Where they pause, what they misread, and where navigation creates friction will tell you more than any internal review can.

Iteration is not a sign that the first pass failed. It is how the work gets finished.

The invisibility, earned through deliberate game UI design and strong game UX, is the actual goal regardless of the tools used to get there. Unity UGUI, UI Toolkit, UMG Unreal, Godot's built-in UI system, and React for web-based games each serve different project needs. In 2025, the best studios are also streamlining how designs move from prototyping tools like Figma into the engine without friction or duplicated work.

The tool is a decision. Discipline is the constant.