As of right now (in the US at least) googling "construct" not only ranks the Scirra site as #2 (second only to Merriam-Webster's definition), but it has one of those indented sub-results underneath it as well to make it stand out. Also, there's another listing a little further down the page, so that's three spots on the first results page.
Googling "game maker" unsurprisingly only returns results for Game Maker, but "open source game maker" kicks back Scirra as the #1 result .