/ From text menus to sushi icons: a UX case study

Casushi rebuilt its mobile lobby around sushi rolls, nigiri and chopsticks, and the result was not just a cosmetic refresh. When the team tested the redesigned interface against the old text-heavy menus, players reached a completed cashier deposit 15% faster on mobile. That single number explains why the sushi icons exist: a deposit button shaped like a sushi roll does not need a label to be understood. This is the story of how a themed casino design turned into a measurable usability decision.

Why the old text menus slowed players down

The original Casushi layout was competent but wordy. Navigation relied on stacked text links, each one a short phrase such as “Deposit”, “Withdraw” or “Promotions”, arranged in a conventional sidebar that collapsed into a hamburger menu on smaller screens. On a desktop monitor with a mouse, that worked well enough. On a phone held one-handed, it asked players to read, aim and tap in sequence, and every extra step added friction.

The problem was most acute in the cashier. Deposits sit at the end of a chain: open the menu, find the cashier, choose a payment method, enter an amount, confirm. Each stage carried a text label the player had to parse before acting. Under testing, players who were already familiar with the brand still paused at the cashier entry point, and newer players sometimes opened the withdrawal screen by mistake because the two links sat side by side with similar wording.

The design team’s conclusion was blunt: the interface was asking players to read when it should have been asking them to recognise. Recognition is faster than recall, and it is far faster than reading a menu label under time pressure. That insight set the direction for the redesign.

Building a sushi icon set that works without labels

The team settled on a small, disciplined icon family rather than a sprawling illustration library. Each core action earned a single sushi motif with a consistent silhouette, weight and colour treatment, so the set read as one system. A sushi roll became the deposit icon. Chopsticks framed the games lobby. A soy dish marked account settings. The mapping was deliberately limited to the actions players use most, because an icon set only aids recognition when the vocabulary stays small enough to learn.

Colour did as much work as shape. Deposit and withdrawal shared a family resemblance but diverged sharply in hue, which killed the old mix-up between the two screens. Icons were tested at small sizes first, since a phone screen compresses everything, and any motif that turned to mush at 24 pixels was redrawn rather than shrunk. The final set held its shape on the smallest common phone widths without extra padding.

What the user testing actually measured

The headline result was the 15% faster cashier deposit time on mobile. Testers who had never seen the redesign found the sushi roll deposit icon without reading its label, then completed the deposit flow more quickly than the control group using the text menu. The gain came almost entirely from the entry point: players skipped the scanning phase and went straight to the cashier. Secondary findings were quieter but useful. Mis-taps between deposit and withdrawal dropped, and players described the lobby as easier to scan, though the team treated those self-reports as supporting evidence rather than proof.

Testing also exposed limits. Icons for rarely used features, such as setting deposit limits, still needed text labels, and the team kept them. The lesson was that icons accelerate familiar, high-frequency actions and confuse unfamiliar, low-frequency ones. The redesign applied icons where they earned their place and left words where words still did the job.

How the mobile experience carries the design

The icon system only pays off if the underlying mobile experience is solid. Apple users download the Casushi app from the App Store, where the listing carries the same visual language as the lobby. Android users access the Casushi site through a mobile browser, typically Chrome, and get the same icon set rendered by the responsive layout. Casushi does not publish a standalone Android APK file, so there is no sideloaded build to worry about, and no version of the app drifting out of step with the design.

The responsive site detects screen dimensions automatically and reflows the lobby to suit the device, from a small iPhone to an iPad. On the app side, the Casushi app supports Face ID logins, which removes the password step on return visits and complements the faster cashier entry. The Casushi app cashier manages payments inside the same icon-driven flow, so a player who learned the deposit roll on the mobile site finds the identical control in the app. The mobile site also offers responsible play tools, and those remain text-led by design, because deposit limits and self-exclusion deserve plain language rather than a symbol.

Smaller touches reinforce the theme without getting in the way. The mobile lobby includes the welcome offer, presented with the same iconography as the rest of the navigation. Players who prefer the browser can add a home screen shortcut for quicker access, which is the closest Android equivalent to an installed app. Push notifications, where enabled, reuse the icon language so a message about a bonus is recognisable at a glance.

For anyone weighing up how to play, the practical options break down like this:

What the sushi icons changed, and what they did not

The redesign is a case study in matching visual style to a real user problem. The sushi theme could easily have been decoration layered on top of a slow interface. Instead, the theme became the navigation grammar, and the 15% faster deposit time gave the team a number to defend the decision with. Themed design earns its keep when the metaphor does functional work, and a sushi roll that reads as “deposit” is doing exactly that.

What the icons did not change matters just as much. The cashier still asks for the same information, the payment methods are unchanged, and the responsible gambling tools still spell things out in words. The redesign moved the speed gains to the front of the journey, at the point where a player decides to act, and left the careful, deliberate parts of the experience alone. That balance is why the case study holds up beyond the novelty of the theme.

There were trade-offs. A custom icon set costs design time and needs testing at small sizes, and it only works when the vocabulary stays tight. The team also had to resist the temptation to iconise everything, since a screen full of unlabelled symbols is harder to use than a clean text menu. The discipline of keeping labels on low-frequency actions was as important as the decision to remove them from the deposit button.

Practical takeaways for themed casino design

Start with the actions players repeat most and give those the strongest visual treatment. Test icons at real phone sizes before committing to artwork, and let colour separate actions that players confuse. Keep text labels on anything infrequent or consequential, especially limits, exclusions and account security. Measure the result in task time rather than opinion, because a design that feels clever in a review can still slow players down in practice.

If you want to see the approach in action, use the official routes: the App Store listing for Apple devices, or the Casushi mobile site through Chrome on Android. This website operates as an information page only and does not host games or take deposits, so play and payments happen on the official Casushi platform. Treat the sushi icons as a lesson in recognition over reading, then judge for yourself whether the deposit roll really does save you a second or two.