Same craft, three genres
The first time it bit me, I was drawing the hero path.
That’s the open-world reflex. You build one beautiful intended route through a space and lavish attention on it: the reveal you get cresting the hill, the sightline that pulls you toward the objective, the fight staged so the player walks in from exactly the angle you wanted. On Assassin’s Creed that instinct served me for years. One player, a free camera, effectively infinite time. You author the moment once and trust them to find it.
Where the reflex broke
Then I moved to a four-player co-op heist, and the hero path fell apart in my hands. Four people don’t walk in from the angle you wanted. They split up. One’s on the roof, one’s drilling the vault, two are holding the lobby, and the route you lovingly authored is being used by nobody, because a crew doesn’t move like a protagonist. A co-op space needs parallel routes and parallel jobs, not one gorgeous line. I’d been designing for a soloist and handed the level to a band.
The reflex broke again, worse, on the extraction shooter. On Assassin’s Creed and PAYDAY I could still script the encounter: place the guard, set the trigger, know what walks into the room. ARC Raiders took that away. The danger in the room is other real players and the AI at once, and I don’t get to decide who shows up or what they do. You stop designing the scene. You start designing the conditions the scene happens in, and let go of the rest.
Camping is where that goes from theory to a real problem. If the best loot or the exit sits in one spot, someone will hold it and farm whoever comes for it, and you can’t patch that out with a rule, because sitting still is a fair thing to do. So you build against it in the geometry. No overwatch position gets a free angle; every strong seat has a flank or a blind approach that makes the camper reachable. Extraction points are multiple and never all coverable at once, so holding one costs you the others. The map keeps moving people, with loot that pulls them elsewhere and danger that rises if they stay, so the camper who won’t leave gets found by the AI or the clock. You don’t ban camping. You make sure it’s never the strictly best thing to do.
What didn’t break
So three genres, three times my hands did the wrong thing. It would be easy to read that as three unrelated crafts. It isn’t. The reflexes that broke were the application. What didn’t break was the foundation, and it’s the same four things every time.
Readability under pressure. The player has to parse the space fast and correctly under load: where can I go, where’s the threat. That’s true for one stealth player reading a rooftop and four people reading a firefight and a raider reading a contested room before someone reads them first.
Landmarks over waypoints. You guide with silhouettes and shapes the eye trusts, not with walls that funnel or arrows that nag. A distinctive skyline does the same job across a continent, a heist floor, and an extraction map.
Blockout first. Greybox the flow, playtest it, prove the space works before a single artist touches it. The rhythm of calm and danger lives in the geometry: cover cadence, sightline breaks, the safe pocket you give players right before you take it away. Same process on all three.
Who you’re building for
What changes between genres is who you’re designing for and how long the space has to stay alive, never the fundamentals. Open world is one player moving through an authored place at their own pace, and it has to hold up to a free camera coming from anywhere. A heist is four coordinating brains replaying the same floor a hundred times, so it has to work in stealth and loud both, and still surprise someone who’s memorized it. An extraction map is a stage for a fight you can’t script, where the best loot sits in the most exposed spot, choosing to extract is a real commitment, and one sightline has to serve a PvP standoff and a PvE ambush at once. Different audience, different lifespan, same craft underneath.
The hardest part of the switch was never the toolset. It was catching the reflex before it fired, and asking who I was actually building for this time.