Turns, waves, levels

• Turn = one visit = 3 darts. After your third dart (or when you pull your darts) the horde phase runs: burning lanes tick, defences fire, every zombie advances one band (runners two), then the next group crawls on from the red arrows. A turn is not a wave.
• Wave = a block of turns: 6 in Endless, 3 in the Campaign. The diamonds under your bunker HP count the turns of the current wave; the red-rimmed one is the surge (almost twice the zombies). The left console always says when the next rank-up, surge or boss comes.
• Level (Siege Campaign only) = a few waves with a name. Each level brings something new (a building, a zombie, a power-up, your ability or a perk), explained in the briefing at camp. When its last wave is in, nothing new arrives: clear the board (mop-up). At camp you pick a new power-up, rank one up (Mk II, Mk III) or heal. Only power-ups in your loadout drop on the board.
• Endless = waves forever, a boss every 18 turns, survive as long as you can. Horde and Fortress are always Endless; Siege can be either (title screen: C or any 20).

Survivors, perks and abilities

• Before each run you pick a survivor (3 per mode). Each has a signature perk active from turn 1, a fixed perk tree and one ability. There is nothing to choose mid-game: perks unlock by themselves.
• Rank up: in Endless every wave (turns 7, 13, 19...) unlocks the next perk of the tree; in the Campaign the levels grant them. Past the end of the tree each rank is a field promotion (more max HP + a heal).
• Ability: kills charge the meter in the right console. When it says READY, hit the bed it names (a treble, the bull...) and it fires on that dart. The board highlights those beds.

Zombies walk inward along their number's wedge: outside the board → double ring → outer single → treble ring → inner single → 25 → bunker. A zombie that reaches the bull hits the bunker. At 0 HP you're overrun.

Horde mode

• Single: 1 dmg to the innermost zombie in that lane. Riot shields ignore singles.
• Double: 2 dmg and +2 wall HP on that lane. Walls stop zombies at the edge until they're smashed.
• Treble: 3 dmg and builds a tower (or upgrades it, max L3). Towers shoot every turn and block their lane. L2 hits for 2, L3 also hits the lanes either side.
• 25: shockwave, 1 dmg to everything in the inner bands. Bull: airstrike, 2 dmg to bands 1-3 and knocks them back.

Fortress mode

• Every bed is a build plot. The first hit builds, further hits level it up (pips under each defence).
• Treble = Gun Turret, Double = Barricade, outer single = Spike Field, inner single = Flame Bunker, 25 = Workshop, Bull = Citadel Core (and Overdrive: everything fires now).
• Darts do no direct damage: defences fight in the horde phase. Neighbouring builds form synergies (teal dashed links). Kits give a defence an element (glowing aura).

Siege mode

• Every dart builds the plot it lands in (Fortress rules) AND shoots that lane (Horde damage, a little lighter).
• Campaign (default): a tutorial that ramps into a real fight. Buildings, zombies, power-ups, your ability and perks arrive one level at a time. In the Campaign a plot whose building is not unlocked yet only shoots.

Board neighbours matter: splash and fire hit the real numbers either side (20 → 5 and 1). Visit bonuses: 100+ = TON (defences fire twice), 140+ also freezes the horde, 180 wipes the board. Three darts in one number = hat-trick.

Checkout strike: score the target exactly in one visit, finishing on a double or bull. The route is outlined in gold with numbered badges. Pick-ups sit on common checkout beds; red hazard triangles are traps.

Controls

• Camera auto-scoring detects darts automatically. Corrections made in your scoring app are applied while the turn is still open.
• Mouse: click the board to throw, right-click = miss. Nothing sits on the board: the battle is on the left console, your visit on the right. Hover anything for a tooltip.
• Keyboard: type t20 d16 s5 25 b then Enter; M miss; Backspace undo; Space end turn now; 1-4 camp pick. At camp: hit 20 / 6 / 3 to choose, then pull your darts, hit the bull or press Space to start the level.
• Title screen: M / 25 cycle mode, C / 20 Siege Campaign / Endless, Enter / bull next step, 1-3 / 1-3 pick a survivor, 1-4 / 1-4 difficulty and start, Backspace back.
• [ / ] shrink the left / right console to a slim essentials rail (or click its corner arrow) · O overlay · V big-number view · F fullscreen · N sound · Q title · H this screen.

Auto-scoring

Display & sound

Overlay (over the camera feed)

Press O to toggle. Line the board up with the real board in your camera view.

The horde

Pick-ups