Higher or Lower: World Facts

Higher or Lower: World Facts is a quick comparison game where you test your knowledge of the real world. Each round shows two items from the same category -- country population, landmark height, animal speed, or planet size. You see the value of the first item, then guess whether the second is higher or lower. Pick a category from the deck and start comparing. A correct guess keeps your streak alive and the game continues with the next pair. A wrong guess ends the run with a short explainer that shows why. The goal is to build the longest streak possible across all four categories. Each category includes 12 items, giving you up to 11 comparisons per run. Values are real-world estimates drawn from public reference data. The game uses two clear card slots, a card flip animation, and color feedback for each guess. Higher and Lower buttons stay large enough for mobile touch input, and keyboard arrows work on desktop. The streak counter and best streak are always visible at the top of the screen.