Secrets of
Hellevoetsluis

How the Secrets of Exploration City Game works

Discover how the self-guided exploration game leads you through the city, step by step.

/* PHONE SCREEN SECTION */ .phone-screen-section { position: relative; min-height: 520px; background-size: contain; background-position: center; background-repeat: no-repeat; transition: background-image 0.3s ease-in-out; } /* Ensure inner column keeps height */ .phone-screen-section > .kt-inside-inner-col { min-height: inherit; } /* USP items clickable */ .game-usp { cursor: pointer; transition: all 0.2s ease; } /* Active state styling */ .game-usp.is-active .kt-blocks-info-box-title { color: var(–global-palette10, #3182CE); } .game-usp.is-active .kt-blocks-info-box-link-wrap { background: rgba(0,0,0,0.04); } document.addEventListener(“DOMContentLoaded”, function () { const phone = document.querySelector(“.phone-screen-section”); const usps = Array.from(document.querySelectorAll(“.game-usp”)); if (!phone || usps.length === 0) return; /* 👇 VERVANG DIT PER CONCEPT */ const screens = { “usp-1”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-1c.webp”, “usp-2”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-2b.webp”, “usp-3”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-3.webp”, “usp-4”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-4.webp”, “usp-5”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-5b.webp”, “usp-6”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-6.webp”, “usp-extra-1”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-extra-2.webp”, “usp-extra-2”: “https://testwebsite.citygame.com/wp-content/blogs.dir/1/files/sites/62/2026/02/secrets-usp-extra-1.webp” }; let activeKey = null; function setBackground(key) { if (!screens[key]) return; phone.style.backgroundImage = `url(“${screens[key]}”)`; } function setActive(el) { usps.forEach(u => u.classList.remove(“is-active”)); el.classList.add(“is-active”); const key = Object.keys(screens).find(k => el.classList.contains(k)); if (!key) return; activeKey = key; setBackground(key); } /* CLICK = permanent select */ usps.forEach(el => { el.setAttribute(“role”, “button”); el.setAttribute(“tabindex”, “0”); el.addEventListener(“click”, () => { setActive(el); }); /* KEYBOARD SUPPORT */ el.addEventListener(“keydown”, (e) => { if (e.key === “Enter” || e.key === ” “) { e.preventDefault(); setActive(el); } }); /* HOVER = preview (desktop only) */ el.addEventListener(“mouseenter”, () => { const key = Object.keys(screens).find(k => el.classList.contains(k)); if (!key) return; setBackground(key); }); el.addEventListener(“mouseleave”, () => { if (activeKey) { setBackground(activeKey); } }); }); /* Default first active */ if (usps[0]) { setActive(usps[0]); } });