Most 'how did I just get one-shot' moments in 9 Kings have the same few causes. Every number here comes from the game's own files for the current version.
Why late enemies hit so hard
Enemy stats rise by a fixed step every year, set by the difficulty, and the first six years are softened. Year 7 is the first year at full strength, which is why a kingdom that cruised through the opening can lose a life there.
By the late years the gap is wide. On King IX IX an enemy unit in year 33 has about 163 times its base HP and 12.5 times its base attack. A level 1 Wizard has 15 HP. No number of Wizards survives that without help, so past the middle of a run protection has to come from effects, and raw HP is only part of it.
Check the Enemy Wave Calculator for your difficulty before a long run, and plan the year your engine has to be online.
The hard caps
HP and attack both stop at 100,000,000. Once your units and the enemy's are there, any capped hit kills any capped unit, and the fight is decided by who hits first and how often. This is the real answer to losing a plot that looked unkillable.
Attack speed stops too: a unit can land at most 29 hits a second, a tower 49 and an Hourglass only 10. When a plot's damage is capped, attack speed is the only stat left that adds anything, so Beacons and Adrenaline keep their value to the end while damage buffs stop mattering.
Take the caps as a spending guide, with one catch: the number shown on a plot never stops. It keeps climbing far past 100,000,000, and the cap is only applied in battle. So don't wait for a plot's number to freeze. Once it reads more than 100,000,000, that stat is finished, and the next card belongs on another plot. A second plot at half the cap adds more than a first plot pushed past it.
Hits a second has the same split. The plot's tooltip tops out at 99.999, which is only how far the display goes; in battle the 29 and 49 limits are what count.
| What | Cap |
|---|---|
| HP and attack | 100,000,000 |
| Hits per second | 29 (towers 49, Hourglass 10) |
| Crit chance | 100% |
| Crit multiplier | x29 |
| Steel Coat, explosion, combustion stacks | 49 |
| Venom stacks | 299 |
| Adrenaline stacks | 99 |
| Traps | 999 |
| Troops on one plot | 4,999 |
Does endless ever end?
Not by itself. There is no last year. After year 33 the calendar repeats on an 11 year cycle, with a war diplomat 2 years in, a decree pick at 4, a merchant at 7 and a peace diplomat at 9, and the run stops only when the last life is gone. The game also warns that endless is experimental and that glitches can happen.
What ends a long run is the caps. Enemy stats start compounding after year 33, while your units stop at 100,000,000 HP and attack in battle however high the plot's own number climbs. Once the enemy is capped as well, any capped hit kills any capped unit, and the fight turns on hits a second, how many bodies each side has and who lands first.
So plan the last stretch around what still grows. Spare attack speed, Steel Coat stacks and unit count keep paying after damage has stopped. A kingdom built only on damage is the first to stall.
How crits work
Every hit rolls once against the unit's crit chance, and a crit multiplies the damage. Chance adds up from the card and from decrees: Eyeglass gives all your plots 30% and can be taken 5 times. It stops at 100%, so a fourth Eyeglass on a unit that already crits every time is wasted.
Troops start far apart. Executioners, Thieves and Ballistas begin at 20% chance, Archers, Elves and Warlords at 10%, most others at 5%, and Dwarves and Lab Rats at 1%. All of them start with a x2 crit.
The multiplier is the stat to push once chance is full. Iron Fist doubles crit damage with each pick, up to the x29 limit. On a 20% troop, two Eyeglass picks and then Iron Fist is a stronger order than Iron Fist first.
Life steal and healing
Life steal heals the attacker for a share of the damage it deals, up to its max HP. It needs the unit to be alive and hitting, so it suits fast attackers and does little for a slow one that fires once and dies. The Revitalize decree doubles every heal you receive.
Two effects heal past max HP. Reinforce adds 2% HP per second in battle and can take a troop to 3 times its HP. Heartvine lets the Treant's field overheal as well. Against enemies that hit below the cap, that is real extra life. Against a capped hit it changes nothing.
A Spire heals whichever of your units is closest to death, which makes it better for a small fragile plot than for a swarm, where the unit it picks is usually already gone.
The stalemate clock
A battle that runs past 300 seconds, or 180 in multiplayer, becomes a stalemate. Damage starts landing every second and healing is switched off, life steal included.
This is the limit on pure defence. Defenders reflect damage and never attack, and a wall only stands there. If nothing behind them is killing, the clock ends the fight for you. Any build around Defenders or Wallmakers needs a damage source picked at the same time, never later.
What actually protects a plot
Steel Coat is the strongest single answer to big hits. It cancels the first hit a unit takes in each battle, whatever its size, and stacks to 49. A capped hit and a weak one cost the same single stack, so it is best on a few tough units and poor on a swarm facing fast attackers.
Frost slows the enemy's movement and attack speed by 20%, which cuts incoming damage from everything it touches. Defenders send back all the damage they take, so the harder the enemy hits, the more it hurts itself.
Swords and Shields add a flat amount or a percentage, whichever is higher: 5 damage or 5%, and 10 HP or 10%. Early, the flat number is bigger, so they are worth more on small cheap units in the first years. Late, they are a plain 5% and 10%. Play them when you draw them and do not hold them for later.
