How to Play Darts — 501 Checkout
Darts on Vibe Arcade is a faithful browser recreation of the 501 format played in pubs and professional competitions around the world. Both you and the CPU start with a score of 501. On each turn you throw three darts at the bristle board; the value of each segment is deducted from your running total. Your goal is to reach exactly zero, with the final dart landing in a double segment or the bullseye. The player who checks out first wins.
To aim, click or tap anywhere on the board surface. A circular crosshair appears at your chosen point and begins to oscillate — drifting away and back in a slow wobble that mimics the natural hand movement of a live throw. The wobble amplitude depends on your chosen difficulty: Novice gives you a generous drift radius so near-misses are common, while Pro tightens the wobble to a few pixels, demanding precise placement. Press the Throw button (or hit Space) to release the dart. The actual landing point is exactly where the wobbling crosshair sits at the moment you throw, so timing the release is the whole skill.
Dart pip indicators above the Throw button track how many darts remain in your turn. After you throw you must re-click the board to set a new aim before throwing again — the wobble stops between darts, so you choose each target deliberately rather than clicking frantically. When all three darts are thrown, or after a bust, control passes automatically to the CPU.
Scoring: Segments, Doubles, Trebles, and the Bull
The standard bristle board is divided into 20 numbered segments arranged clockwise in the sequence 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 5 — a sequence designed to put low-scoring segments adjacent to high ones so misdirected darts are penalised. Each segment has four scoring zones: the single (the large main area), the treble ring (the narrow inner band, worth 3× the segment number), the double ring (the narrow outer band, worth 2× the segment number), and the two bull zones at the centre. The inner bull — the bullseye — scores 50 and counts as a double for checkout purposes. The outer bull scores 25 and does not count as a double. The maximum score from a single dart is triple-20, worth 60 points. The maximum from a single turn of three darts is 180, achieved by throwing three triple-20s.
The checkout hint bar below the scoreboard activates whenever your score is 170 or below — the highest achievable three-dart checkout. It shows the canonical finish route in abbreviated form: T20 means triple-20, D16 means double-16, Bull means bullseye. Learn the common finishes by glancing at the hint bar; over time they become automatic.
The Bust Rule
If your running total during a turn drops below zero, reaches exactly 1 (unreachable by any double), or reaches zero on anything other than a double segment or the bullseye — that turn is a bust. All points scored in that turn are voided and your score reverts to what it was at the start of the turn. The bust rule is what transforms 501 from a pure countdown exercise into a strategic puzzle: the last few darts of every game demand careful arithmetic. A player sitting on 32, for instance, wants to hit double-16 directly. Missing the double-16 and landing on the single-16 leaves 16 — now the right double is double-8. Every visit requires thinking two or three steps ahead.
Checkout Strategy
The most important skill in 501 is knowing your checkouts. Canonical finish routes avoid awkward leaving-numbers and steer toward the high doubles — double-20 (tops), double-16, and double-8 are the three most common finishes in professional play because missing the double leaves you on a useful even number for the next attempt. The checkout hint bar in this game shows the same routes used by professional players, covering every direct double from 2 to 40 and every three-dart finish from 41 to 170. A score of 170 (triple-20, triple-20, bullseye) is the highest possible checkout and one of the rarest achievements in live darts; in this game it requires Pro difficulty and a great deal of luck.
When your score exceeds 170, you cannot finish in this turn regardless of where you aim. The tactical goal becomes leaving yourself on a checkout score — ideally 170 or a common two-dart finish like 40 (double-20) or 32 (double-16). Experienced players deliberately aim for segment combinations that leave clean leaving-numbers even if the total for that dart is lower than the best possible score.
AI Difficulty Tiers
Novice AI throws with a wide scatter (±80 pixels from its target) and always aims at the triple-20 without routing checkouts. It misses frequently, busts often on awkward scores, and provides a forgiving introduction to the game. Amateur AI tightens its scatter to ±40 pixels and uses the canonical checkout table when within finishing range — it will attempt the correct route but still misses enough to give the player a fighting chance. Pro AI reduces scatter to ±18 pixels and executes checkout routes with near-clinical accuracy, making it a tough opponent in any game that goes to the wire. Choose Pro only once you can consistently hit the doubles yourself.
A Brief History of 501 Darts
Darts as a competitive sport traces its popular roots to English pub culture of the late nineteenth and early twentieth century, though the exact origins of the modern numbered board layout are disputed. The British Darts Organisation standardised the rules in 1954, and the 501 format — starting from 501, finishing on a double — became the dominant competitive format for singles play. The first World Darts Championship, held at Nottingham in 1978, used 501, as does every major professional tournament today. The checkout table played in professional matches is exactly the table shown in this game's hint bar: routes developed empirically over decades of competitive play and refined by mathematical analysis of leaving-number distributions. The highest televised nine-dart finish — the perfect game requiring two visits of 180 and one checkout of 141 — has been achieved dozens of times in professional competition, most famously by Phil Taylor in 2002.
Frequently Asked Questions
How do you win at 501 darts?
Reduce your score from 501 to exactly zero, with the final dart landing in a double segment or the bullseye (50). The first player to check out wins. Going below zero, hitting exactly 1, or finishing on a single or treble is a bust — your score reverts to the start of that turn.
What is a checkout in darts and how does the hint bar help?
A checkout is the sequence of darts that takes you from your current score to exactly zero, ending on a double. The checkout hint bar activates whenever your score is 170 or below and shows the canonical finish route — for example "T20 D20" from 100. The routes shown are the same ones professional players use, covering every direct double from 2 to 40 and every three-dart finish from 41 to 170.
What scores cannot be checked out?
The scores 169, 168, 166, 165, 163, 162, and 159 have no valid three-dart finish and cannot be checked out in a single visit. Any score above 170 also cannot be finished in one visit. The hint bar shows blank for these scores, and also for odd scores below 41, which need a single first to leave an even number. Either way the correct play is to score points while leaving yourself on a reachable number next turn.
How does the wobble crosshair work?
Click or tap the board where you want to aim. A circular crosshair appears and begins oscillating around your chosen point. On Novice the drift radius is large; on Pro it is tight. Press Throw (or Space) to release the dart — the dart lands exactly where the drifting crosshair sits at that instant, so the release timing decides the shot. You must re-aim by clicking again before each subsequent dart.
How do the three AI difficulty tiers differ?
Novice scatters ±80 px from its target, always aims at T20, and makes no checkout attempt. Amateur tightens to ±40 px and uses the canonical checkout table when in range. Pro scatters only ±18 px and routes every checkout precisely — it will attempt the triple followed by the correct double and rarely busts.
Is there a leaderboard?
Yes. The Darts leaderboard ranks by fewest total darts thrown — a lower score is better. Only completed checkouts are ranked: if you win with a top-10 dart count, the LeaderboardWidget appears at game end to capture your name. After a loss it still opens so you can read the standings, but nothing is submitted. Each difficulty tier ranks on its own table, so a Novice checkout is never measured against a Pro one.
Does Darts work on mobile?
Yes. The board auto-scales to your screen width on screens narrower than 600 px, up to a 360 px board, and touch events are handled natively — tap to aim, tap Throw to release. On narrow screens the scoreboard stacks below the board for a comfortable single-column layout.
