The Arena

Quick answers

Is Iron Realms free to play?: Yes. Iron Realms is free to play in any browser with no download. Play offline with no account, or sign in to join the live realm. Nothing is for sale during the Alpha; when purchases open they will buy speed and cosmetics, never a higher ceiling.
Does spending money make you stronger in Iron Realms?: No. Nothing purchasable raises your power ceiling. A charter audit runs on every build and fails it if any offer would sell power. During the Alpha nothing is for sale at all — better than that, the store gives its goods away: everything in it is free to take, once a day per item, while the realm is being built. When payments do open, spending will compress time only: it clears timers, it never raises the summit.
How long does it take to max a keep in Iron Realms?: Keeps cap at level 45 and troops at tier 13 — the same summit for everyone, and it is a campaign: about seven months of steady play at half an hour a day, counting keep 45 and the nineteen plots that gate it. The Fair Play ledger inside the game reads that figure straight out of the shipped constants, so it is never a month behind the build.

Not every fight needs an alliance. The Arena is pure one-on-one: your host against another lord's, ranked on a skill ladder. Win and you climb; the higher you sit, the richer the season's rewards.

How the ladder works

Everyone starts at 1,000 rating.
Duels resolve on standard Elo with a K-factor of 32 — the practical meaning of which is that a single duel moves you at most 32 points, and beating someone far above you moves you nearly the full 32 while beating someone far below barely moves you at all.
Trials have a one-hour cooldown. The Arena is a season-long climb, not something you can grind out in an evening.
The ladder resets each season, so there is always a fresh climb and a reason to return.

K=32 is the number that should shape how you play it. Against an opponent rated 200 above you the odds are roughly one in four — but four losses cost you less than the one win gains, because the loss against a stronger foe is small. Punching up is mathematically correct. Farming opponents 200 points below you gains a handful of points a duel and costs you dearly the one time you slip.

The renown ladder

Each Arena win pays 25 renown, and renown carries its own six-rung ladder: Unproven (0) → Sworn (500) → Renowned (1,500) → Storied (4,000) → Illustrious (9,000) → Legendary (20,000). The thresholds more than double at the top end, so Legendary is a genuine long-haul rank.

Climbing

Bring the right counters — the troop triangle decides duels exactly as it decides field battles. See the Combat Guide.
Lead with a strong commander and a tuned loadout; small edges compound across a ladder run.
Fill your gear ring before you upgrade it. Four common pieces beat one legendary and three empty slots, because of the set bonus — see The Lord Profile.
Pick fights near or above your rating. The Elo maths rewards it and punishes farming.
One duel an hour means the ladder rewards frequency of logging in, not session length. Two short visits a day beat one long one.