The Metroidvania Map and the Dopamine of the Locked Door

The best moment in a metroidvania happens when nothing happens.

You walk into a room. There’s a ledge you can’t reach, or a shaft going up into dark, or a door in a colour your gun doesn’t do. You try the obvious thing, the obvious thing fails, and you leave. That’s it. That’s the moment the genre is built on, and everything else — the abilities, the bosses, the lore in the item descriptions — is scaffolding around the business of making you leave a room with an unfinished thought in your head.

The opening is the reward’s poor relation. Four hours later you come back with a double jump and the ledge is a ledge. It takes six seconds and it’s fine. The four hours of knowing the ledge was there is the product.

Metroid didn’t have a map

Metroid, 1986, Nintendo R&D1, Famicom Disk System first and the NES cartridge after, produced by Gunpei Yokoi with Yoshio Sakamoto directing. Zebes is a large interconnected cave system with colour-coded doors, dead ends that stop being dead ends once you have bombs, and a morph ball that turns half the walls into corridors.

And there is no map. None. Not a minimap, not a pause screen, nothing. Metroid II on the Game Boy in 1991 didn’t have one either.

So people drew them. Graph paper, biro, a shoebox of increasingly illegible A4 next to the telly — this is a documented mass behaviour, and it’s the same behaviour the Ultima and Wizardry crowd had been performing since the late seventies. The map existed. It just lived on your side of the screen, and drawing it was where the game actually happened, because the act of drawing forced you to decide what mattered. You didn’t sketch every tile. You sketched the door you couldn’t open and put a question mark next to it.

That question mark is the whole genre. Everything since has been an argument about who should be holding the pen.

Super Metroid’s concession

Super Metroid (1994) put the map in the machine. Minimap in the corner, full map on the pause screen, and Map Stations dotted around Zebes that fill in a region’s layout when you touch them, so the map itself is a collectible.

This was a concession and Nintendo knew it. Zebes in 1994 is too large to hold in your head, so the game holds it for you. That’s a real trade: the map screen is an admission that the level design cannot carry its own navigation, and every automap since has been paying that debt.

What Super Metroid got right is that it kept the question mark on your side. The map draws the room. It doesn’t tell you the room has a secret, doesn’t highlight the ledge, doesn’t put a marker on the thing you failed to reach. The game’s famous opening does the work instead: within about ninety seconds of landing you have walked past several things you cannot do anything about, and the design’s confidence is that you’ll remember. It’s right. You do.

Symphony of the Night made the map the score

Castlevania: Symphony of the Night (Konami, 1997, with Koji Igarashi as assistant director) did something quietly enormous: it made the map fill in per tile, in real time, as you walked, and put a percentage on it.

Suddenly the map is a progress bar, and the number is a taunt. 78.4%. There is 21.6% of a castle you have not seen and the screen is telling you so. The famous inverted castle takes the total past 200%, which is a joke about scale and also the single most effective piece of retention design of its console generation.

The word “metroidvania” came out of the press and the forums in the years after, never from Konami — Igarashi has been clear he didn’t coin it, and the compound has been faintly annoying people ever since. But the reason it stuck to those two games and not the dozens of other side-scrollers with backtracking is precisely the map. Metroid built the world worth mapping; Symphony built the interface that made mapping feel like scoring. The canon is mostly the descendants of that pairing.

Hollow Knight charges you for knowing where you are

Team Cherry’s Hollow Knight (2017) did the bravest thing in this genre in thirty years: it made the map an object with a price.

You do not have a map of Hallownest. You have to find Cornifer, a cartographer who sits in each new region humming to himself, which is the only reason you find him — you hear him before you see him, and the game has taught you to walk towards the noise. You buy his partial map. To have your own explorations added to it you need a Quill from his wife Iselda back in Dirtmouth, and even then the map only updates when you sit at a bench, so the region you’ve been picking through for the last twenty minutes stays blank until you get somewhere safe.

And your position isn’t on the map. To see the little arrow that says you are here, you equip the Wayward Compass, and it costs a notch — a notch you could have spent on a charm that makes you stronger or lets you heal faster.

Sit with that. Knowing where you are is priced against combat power, in the same currency, and you have to choose. I can’t think of a cleaner statement of what this genre is about. Being lost is restored as a state you can be in, which means being found is a thing that can happen to you, which means Cornifer’s humming in a dark room is one of the most welcome sounds in games.

Hollow Knight took the pen back off the machine and made you pay for it, and the game is better than its whole generation for it.

The ledger

What’s actually going on, mechanically, is bookkeeping.

Every locked door is a promise the designer takes out on credit. The map is where the debts are recorded, and the loop is: incur debt, wander, acquire the means to settle one, notice that settling it exposed three more. Anticipation is what you’re playing for — the reward-prediction work has been fairly consistent for a couple of decades now that the chemistry fires on the expectation rather than the payoff, and any metroidvania player could have told you that for free, because everyone knows the walk back to the ledge is duller than the four hours of thinking about it.

Which is why the craft is entirely in the placement. The obstacle has to be seen early, understood as an obstacle rather than a wall, and remembered. Put it somewhere you’d never walk and the debt never gets recorded. Explain it too clearly and it becomes a chore on a list. The sweet spot is a room you passed through on your way somewhere else, where the thing you couldn’t do was slightly embarrassing.

Metroid Dread (2021, MercurySteam) understood the placement and added a clock: the EMMI zones are regions where an invulnerable machine hunts you, so the debt you’re carrying is in a room you’d rather not be standing in, thinking. It’s the series remembering what it is — the tension of the unopened door with a reason not to loiter.

Animal Well (Billy Basso, 2024) goes the other way entirely and withholds the categories. A metroidvania built like a locked room, where you often can’t tell whether the thing in front of you is an obstacle, a decoration or a solution, and the ledger you’re keeping is mostly in your own notes app. Graph paper, 2024, by choice.

Graph paper, digitised

The most honest admission in the genre’s recent history is a Ubisoft feature.

Prince of Persia: The Lost Crown (Ubisoft Montpellier, January 2024) lets you take a screenshot of anything on screen and pin it to the map. See a wall you can’t break, hit the button, and a photograph of that exact wall sticks to that exact spot on your map.

It’s a small feature and it fixes a forty-year-old problem, because the automap was always a lossy format. It stores where, and the thing you needed to remember was why. Every player who ever sketched Zebes on graph paper knew that instinctively, which is why they drew a question mark and a badly rendered ledge rather than an accurate floor plan. The Lost Crown gave the pen back and made it a camera, and it’s the reason the game Ubisoft nearly buried is the best-designed thing the publisher shipped that year.

Forty years, and the state of the art is a photograph of a door you couldn’t open stuck to a picture of a castle. Sakamoto’s team got there in 1986 by shipping nothing at all and trusting you to buy the paper yourself.