{"id":9270,"date":"2026-04-08T17:01:47","date_gmt":"2026-04-08T22:01:47","guid":{"rendered":"https:\/\/frontendmasters.com\/blog\/?p=9270"},"modified":"2026-04-08T17:02:27","modified_gmt":"2026-04-08T22:02:27","slug":"keith-cirkel","status":"publish","type":"post","link":"https:\/\/frontendmasters.com\/blog\/keith-cirkel\/","title":{"rendered":"Keith Cirkel"},"content":{"rendered":"\n<p>Keith Cirkel has been building some interesting and educational web games lately:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.keithcirkel.co.uk\/hue-shift\/\">Hue Shift<\/a>: &#8220;Two colours. One is fixed. The other is yours to bend. Drag to shift hue and lightness until they match.&#8221;<\/li>\n\n\n\n<li><a href=\"https:\/\/www.keithcirkel.co.uk\/too-much-color\/\">What&#8217;s My \u0394E<sub>OK<\/sub> JND?<\/a>: &#8220;You see two colours. Click on the line between them. That&#8217;s it. It starts easy. It does not stay easy.&#8221;<\/li>\n\n\n\n<li><a href=\"https:\/\/www.keithcirkel.co.uk\/css-or-bs\/\">CSS or BS?<\/a>: &#8220;We show you a CSS property name. You tell us if it&#8217;s real or if we made it up. That&#8217;s it.&#8221;<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Keith Cirkel has been building some interesting and educational web games lately:<\/p>\n","protected":false},"author":1,"featured_media":9271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"sig_custom_text":"","sig_image_type":"featured-image","sig_custom_image":0,"sig_is_disabled":false,"inline_featured_image":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[29],"tags":[81,7,10],"class_list":["post-9270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-the-beat","tag-color","tag-css","tag-game-development"],"acf":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/frontendmasters.com\/blog\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-3.01.24-PM.png?fit=1754%2C1142&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/9270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/comments?post=9270"}],"version-history":[{"count":2,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/9270\/revisions"}],"predecessor-version":[{"id":9273,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/9270\/revisions\/9273"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/media\/9271"}],"wp:attachment":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/media?parent=9270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/categories?post=9270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/tags?post=9270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}