Every Beat

Every Beat is a small daily game on Logicers, a site of short learning games. Each day brings one animal and one activity: a dolphin on a dive, a bird in flight, a mammal in hibernation. Your job is to guess its heart rate in beats per minute.

The heart in the middle of the card starts at 60 beats a minute, about a resting human heart, and beats on screen as you change it. You drag up to make it faster and down to make it slower, or slide the scale on the right. The scale is logarithmic and runs from 1 to 2,000 beats a minute. A trace underneath shows ten seconds of beats, and a speaker button lets you hear the rhythm.

When it feels right you press Show its heart. The real heart appears next to yours, and the game tells you how many times too fast or too slow you were. Anything within about 15 percent of the measured figure counts as spot on, since a real heart's pace moves from minute to minute. Each figure was measured by scientists, vets or doctors and checked on two websites, both linked under the answer.

Each day you play adds a stamp to an album, and the game keeps a streak, all stored in your own browser with no login and no cookies. A share card shows the animal and how far off you were without giving away the answer. It suits anyone curious about animals and biology who wants a one-minute guess a day.

The hearts come from a fixed list of 57 animals and moments, so the first one, a blue whale on a dive, comes round again in early December 2026 unless new ones are added. If you open a friend's shared link, the game tells you after your own guess which of you was closer.