Rivals That Play by Your Rules

PlaneSim's AI carriers compete through the same command pipeline players use: five business models, real ledgers, real bankruptcies, and every move visible in world news.

Persistent worlds live or die on competition. A schedule built against a static market is a spreadsheet exercise; the same schedule built against carriers that reprice, add frequencies, and occasionally go under is an airline. PlaneSim worlds can carry computer-run airlines for exactly this reason, and the design decision that matters most is the easiest one to miss: they are not allowed to cheat.

Same commands, same books

Every move an AI carrier makes is issued through the same journaled commands and the same validation a player's moves pass through. Same starting capital. Same aircraft market, same slot pools, same curfews, same fare rules, same books. There is no hidden subsidy and no quiet respawn. If the money runs out, an AI carrier goes through the standard insolvency process: schedule wound down, fleet liquidated, the estate recycled into the market like any player's. Difficulty settings change how often and how shrewdly these carriers act, never the rules they play under.

That constraint is what makes the competition legible. When a rival undercuts your fares, it is spending cash from a real ledger, and the ledger can run dry.

Five ways to run an airline

Every AI carrier operates one of five business-model archetypes, and once you know them you can read a rival's strategy from its behavior.

Each carrier has a name, a CEO, and a public agenda, all visible on its airline card in the Directory. You are never guessing at who you are up against, only at what they will do next.

What a planning cycle looks like

AI carriers plan every few game days, and they read their own accounts before acting. A profitable carrier grows. A struggling one cuts its worst routes, returns idle leased aircraft, and can relocate its hub outright. Enter their markets and expect a response: fare matching, extra frequencies, and an eventual retreat if you win the traffic.

The toolbox is a player's toolbox. They lease, buy used, and place factory orders. They take and repay loans, hold reserve aircraft, run route marketing campaigns, and sell off worn airframes. They buy on cost per seat rather than size alone, which is why you will not catch one parking a widebody on a two-hour hop. A healthy carrier whose hub can no longer absorb another aircraft opens a second base: it picks the best-connected destination it already serves, ferries idle metal there, and starts building that station's own bank of departures.

They also work the partner economy on their own terms. Regionals and low-cost carriers accept interline and codeshare deals, legacies court feeders and join alliances, and ultra-low-cost carriers refuse everything. The underlying mechanics are covered in the wiki's interlining article.

Fare wars and funerals, in public

AI moves surface as world news: routes opened and closed, fleets expanded, fare wars started and ended, hubs moved, deals signed, new carriers entering. Their flights, fares, and schedules appear in every market view exactly as a player airline's do.

In worlds where absorption is enabled, consolidation happens in the open too. A takeover rescues a carrier that has run out of cash before it liquidates; a merger folds a carrier that has been losing money for weeks into a stronger overlapping network. The whole airline changes hands at once, fleet, routes, leases, loans, airport slots, and cash, and the acquirer assumes the target's debts, so it only bids when it can carry them. It takes two: the buyer makes an offer and the target has to accept it. A struggling AI will take a fair offer rather than fly itself into bankruptcy; a healthy one stays independent. Players can stand on either side of that transaction, and every offer and completed merger shows up in world news.

When a carrier does collapse, a fresh entrant can later be founded to fill the gap, so a long-running world refreshes its cast instead of emptying out.

Check the roster before you found

AI is a per-world setting, off by default, and there is no ceiling on the roster: a world can carry as many computer-run carriers as its operator chooses to spawn, at easy, normal, or hard difficulty. The Directory shows who is already flying. Pick your world at play.theplanesim.com and read the cast list first.