How to Add Free HTML5 Games to Your Website (Iframe Embed Guide)

Adding a playable game to a site used to mean either building one yourself or negotiating a licensing deal. Neither is necessary anymore for a large chunk of the HTML5 catalog out there — a properly licensed embed catalog gives you a ready iframe code per game, no build step, no server-side game logic to host yourself.

What you actually need

• A page or CMS block that accepts raw HTML — most site builders, WordPress (via an HTML block or a custom embed plugin), and any hand-coded page all work.
• An iframe embed code for the specific game, generated per-game rather than copied from a different one — the src URL, dimensions, and allow attributes are game-specific.
• Nothing on the hosting side. The game itself runs from the provider's servers; your page just points an iframe at it.

Where PlayKovo's catalog fits in

The publisher catalog lists every game currently cleared for outside embedding, each with a ready iframe code, a JSON/XML feed if you want to pull the whole list programmatically, and device/orientation info so you can filter for what actually fits your layout. Pick a game, copy the code, paste it into your page's HTML.

Reading an embed code before you paste it

A typical embed is a plain iframe pointed at a hosted player URL, with a fixed or responsive width/height and a small set of allow permissions (fullscreen, autoplay, gamepad, pointer-lock for mouse-look and similar games). Don't strip the allow attributes to "clean up" the code — a game built around pointer-lock or fullscreen will visibly break without them, even though the iframe still loads.

The most common reason an embed looks broken

• Wrong container sizing — a fixed-height iframe inside a fluid-width column can crop the game or leave dead space. Use a responsive wrapper (aspect-ratio box) instead of a hardcoded pixel height where your theme allows it.
• A page-level Content-Security-Policy that blocks frame-src for the embed's domain — check your CMS or CDN's CSP header if the iframe silently shows blank.
• Ad blockers on your own visitors' side occasionally flag a generic iframe as an ad slot if it's placed inside an ad-labeled container — keep the embed in its own clearly non-ad block.
• Copying an old embed code for a different game — codes aren't interchangeable between games even when they look similar.

Once one embed is working, the rest of the catalog behaves the same way — same iframe pattern, different src. See iframe vs. JSON feed if you're planning to add more than a handful of games and want to automate the listing instead of pasting codes one at a time.