Metronome Duel: Rules and Strategy

Metronome Duel is the competitive mode of this site's metronome: a local, hot-seat, two-player tempo game. One device, two players, one question repeated until somebody's health bar runs out — how well do you actually know what 137 BPM feels like?

The shape of a match

Each round, the game picks a random target tempo between 40 and 200 BPM. Both players answer the same target, one at a time — this is hot-seat play, so the screen tells the other player to look away, and each turn starts behind a Ready button so nobody sees anything early. When both answers are in, the round reveals the target, both answers, and the damage dealt. Rounds repeat, each with a fresh random target, until one player's HP reaches zero and the survivor takes the match. A rematch resets both players and rolls a new target.

The two modes

You pick a mode when setting up the match, and it applies to both players:

Tap mode shows you the target as a number — say, 164 — and you tap it back. The round takes exactly 4 taps; the game averages the intervals between your taps and that average becomes your answer. You know the number; the test is whether your hands can produce it.
Guess mode flips the direction: you hear the tempo — 8 clicks, with one replay available if you want to hear it a second time — and answer with a slider from 40 to 200. The slider starts at 120, the midpoint. You hear the tempo; the test is whether you can name it.

Tap mode tests production, guess mode tests perception. They're different skills, and most players are noticeably better at one of them.

How scoring works

Every number here comes from the game's scoring engine:

Each answer's distance is how far it landed from the target, in BPM, capped at 160 — so a wildly wrong answer can't lose by more than the full width of the target range.
The closer answer wins the round. If both distances are exactly equal, the round is a tie: no winner, no damage.
The gap is the difference between the two distances — how much closer the winner was. Winning 3-off against 5-off is a gap of 2; winning 3-off against 40-off is a gap of 37.
Damage = gap × the winner's multiplier, subtracted from the loser's HP.
The multiplier starts at 1 and becomes 1 + your total round wins — after your first win it's 2, after your second 3, and so on, for the rest of the match. It never resets.
Both players start at 160 HP — exactly the width of the tempo range, which is the most a single ×1 round could theoretically take.

The multiplier is the engine of the whole game. Early rounds are cheap: a gap of 5 at ×1 is 5 damage. The same gap five wins later is 30. Matches snowball — whoever banks wins early gets to convert small margins into large damage late.

Strategy

Build a tempo library. The strongest move in either mode is boring: practice with the metronome and memorize anchors. The slider runs 40–240 — internalize what 60, 90, 120, 160, and 200 feel like, and every duel answer becomes interpolation between known points instead of a cold guess. Song references work too: any song you know cold is a tempo you own.

In tap mode, subdivide. Four taps is a tiny sample — one rushed tap drags your whole average. Instead of launching straight in, count a bar internally at the target ("1-2-3-4" at what you believe 164 is), then tap on that internal grid. This is exactly the subdivision skill from Metronome Basics, and it's why metronome practice quietly makes you better at Duel.

In guess mode, spend the replay. You get the 8 clicks twice; there's no cost to the second listen. Tap along covertly with a finger on the first pass, count against a known anchor on the second.

Guess conservatively when you're behind. The multiplier math punishes coin-flip answers: losing a round doesn't just cost HP, it feeds the opponent's next multiplier step. When you're unsure, an answer you're confident is within 10 beats the hero guess that might be perfect or might hand over a 30-point gap. Staying alive keeps your own win count growing — and late in a match, the player with the bigger multiplier wins exchanges they only barely deserve.

Ready to test it? Open the Duel tab on the tuner and settle it properly.