The tenth floor's seven heats take place on a succession of racecourses rather than on a single circuit. Carl and Princess Donut begin on paved roads, cross a jungle with a compulsory stop in the Lost City of Upano, enter a working industrial complex, and finish in a seven-story apartment building. Each setting changes what a racer must physically do to advance. A road may divide at a required monster encounter; a factory demands movement over machinery and molten metal; the apartment building turns rooms, shafts, and walls into possible routes. The last two heats use the same building in opposite directions, ending at portals on its roof. The locations determine how the Royal Court of Princess Donut can use its food truck, which opponents it can encounter, and where a seemingly fast path becomes unusable.
The Caves of the Screeching Death Manatees
The first heat is announced as a fifty-three-kilometer run on a mostly flat asphalt road through the Caves of the Screeching Death Manatees. Its stated task is simply to reach the finish line. The description gives the racers six hours but does not identify the course's specific hazards in advance. Carl starts in darkness, unable to make the truck's headlights work, and Donut lights the road with a spell. Other vehicles are already spreading out ahead of them. The race begins with the appearance of a conventional road event, although the name of its environment warns that the surrounding space is dangerous.
Carl soon notices that the announced cave does not match everything he can see: stars are visible above the road. His moving minimap is disabled, while the truck's navigation display offers little more than a mostly straight line. That uncertainty matters because the Royal Court cannot simply inspect the whole venue and choose a safe passage before committing to its course. The broad road accommodates very different conveyances, including the Royal Court's heavy food truck and competitors' cars or mounts. Its apparent simplicity also allows the faster racers to separate quickly from the slower ones.
The manatees become an immediate threat when Carl and Donut encounter other racers in trouble. One of the creatures rises from the water near a damaged, burning vehicle; the Royal Court stops to help instead of using the opening heat solely to improve its placing. Alevtina, a member of the bugbear team in the overturned van, has died, while Jasha and Radoslav survive. The road thus becomes a place where the finish order is shaped by rescue and breakdown as well as speed. Near the end, multiple tracks converge onto a wide approach to a checkered arch. Carl can see damaged competitors still trying to finish, and the Royal Court reaches the line ahead of two surviving teams. The converging roads make the end of the first heat a shared bottleneck after much of the race has been spent apart.
Split roads and gatekeepers
The second heat replaces the long, mostly flat route with two equal ten-kilometer roads over rolling hills. Teams are assigned one path and must keep their vehicles on it. Each path has a gatekeeper monster that must be killed before its racers may resume. Heavy rain and giant hail make the shortened route more difficult than its distance suggests. Its three-hour limit also removes much of the time that the first heat allowed for stops and improvisation.
The Royal Court is assigned the left path. Its map shows the two gatekeeper positions near the middle of their respective roads, close enough that Carl considers whether both encounters might be visible at once. This geography creates two kinds of separation. The assignment prevents a team from simply switching to the less contested road, while the gatekeeper divides its own path into a race before and after a compulsory fight. Donut's difficulty operating the large truck leads the team to put another driver behind the wheel. The venue's hills and weather then make control of that particular vehicle a practical obstacle, rather than a mere question of who has the fastest transport.
The gatekeeper confrontation also draws Carl away from ordinary driving. Hail continues to fall while he deals with the monster and its surrounding complications at the roadside. The condition for continuing is tied to the assigned path, so passing the encounter without meeting its requirement would not be a useful shortcut. The second heat establishes a pattern that recurs in more elaborate forms later: the visible distance to the finish does not measure the whole task when the course contains a required interruption.
The downhill road
The third course returns to a single wide asphalt road but makes its entire thirty kilometers a steep descent. Its announced task is survival, and waves of generated creatures share the roadway with the vehicles. The twenty-minute limit gives racers far less room to stop than either earlier heat. A vehicle that gains speed on the slope must still avoid, withstand, or fight threats appearing directly in its path. The broad surface does not offer the safety that a simple paved route might suggest.
For Carl and Donut, the roadway becomes a sequence of sudden obstructions. The remains of Tem, a gigantic creature already killed elsewhere, appear on the course as a huge obstacle. Later waves bring threats from the road itself and from above. The Royal Court must keep the truck moving while other vehicles draw near or fall behind; the racers cannot treat the mobs as a separate arena encounter. The descending grade, short clock, and successive waves make acceleration useful and dangerous at the same time. The Royal Court finishes first, but that result comes from surviving the road's changing obstructions, not from traveling along an empty straightaway.
Jungle routes and the Lost City of Upano
The fourth heat leaves asphalt behind. Its jungle trail is described as roughly ninety-nine kilometers, with variable unpaved surfaces, monsters, traps, acid rain, and a mandatory refueling stop in the Lost City of Upano. Racers from three other heats share the course. The announced distance does not describe one fixed drive: multiple paths lead toward the pit stop, and some may impose their own tasks. The Royal Court's navigator identifies more than forty possible approaches. Safer paths tend to be longer; the shortest would force a direct passage through uneven jungle near a dangerous temple.
Carl's planned approach combines portions of different paths. The truck is to take a direct route at first, then turn away before the temple, cross a shallow river without a bridge, skirt a southern village, and join a dirt road toward Upano. This plan shows why the venue's geography matters. There is no universal best line across the jungle. The team's tires and stabilizing equipment make the river plausible, while avoiding the temple trades a little distance for a lower chance of meeting a major enemy. Their map cannot reveal every trap. Carl must watch ahead as Donut and the other occupants observe the sides and rear.
The jungle defeats the idea that the plotted line is fully under the team's control. Cannibal attackers crowd a natural bridge decorated with human remains, and Donut uses her enlarged magical paw to clear them from the route. A mandatory quest concerning Maurice, the northern tribe's chieftain, also appears after the team's actions in the jungle alter the local conflict. The race cannot be finished until the required target on their track is dead. What looked like a navigation problem becomes a local chain of encounters with consequences for whether the route remains passable at all.
Upano is more than a sign beside a fuel pump. The approach passes under a marked pit-stop arch into a long street where garage houses from the Royal Court's group and the other heats have been arranged together. Buildings and huts of the city lie beyond the garages. Carl sees a neighboring team arriving and counts open doors to judge how many competitors may have reached the stop before them. The moment the team parks, a two-hour timer begins. Garage doors must remain open, and safe-room protection is unavailable during the stop. The city's street therefore concentrates racers who have taken different jungle paths into one exposed place before they set off again. Its odd boundary also brings other environments into view: Carl sees tall black industrial tubes in one direction and cliffs in another, rather than uninterrupted jungle.
The gasworks, steel mill, and doll workshop
The fifth heat moves into an industrial complex announced as the Gasworks Screw Factory, Steel Mill, and Doll Workshop. Its approximately twenty-kilometer route includes vertical climbing, inverted travel, and gaps as wide as one hundred meters. Extreme heat and molten metal make the racers' containment fields essential. Twelve heats use the venue at once, and its passages are only wide enough for two conveyances side by side. Close quarters create an additional danger: prolonged contact between two containment fields can result in one team losing its protection when they separate.
The building appears ahead of the starting racers as a looming factory beneath dark clouds. Inside, Carl first drives through a large, dim industrial room with heaps of metal spheres. The room's distant red glow comes from the hotter machinery ahead. Narrower doors and conveyor belts lead toward an upper level and vats of molten metal. The belts carry the spheres uphill, but taking one of those routes demands a jump near the end to avoid dropping into a vat. The other doors permit different approaches through the plant, including a route past the area where the metal is formed into coils. The choices are not equivalent: an apparently faster elevated passage demands a vehicle capable of making a dangerous jump, while a lower route keeps racers nearer other machinery and opponents.
Carl's choice of passage is constrained by the movements of competing teams. When the Lady Dominators head for a conveyor route, following or overtaking them would put the truck on a belt full of rolling metal and require the jump at its end. The factory's layout makes another team's line a tactical fact, even before any direct attack. Later, the Royal Court drives through the doll-packing portion, where a thick white cloud limits sight of the exits. Wooden crates narrow the way through a brightly lit room, and animated dolls attack after the seal on their room is broken. Their presence is connected to elemental magic used in the steel mill. The venue's separate industrial zones consequently expose racers to different hazards in quick succession: heat, machinery, poor visibility, cramped passages, and creatures produced by the plant's own activity.
Descent and return in the L'Engle Building
The sixth and seventh heats share the L'Engle Building, a seven-floor apartment block. All remaining heats are brought onto the same course, so their racers are shrunk to travel through its interior. For the sixth heat, the route begins on the top floor and ends at the lobby. Racers may use the building's rooms and internal passages, but may not leave it except through the front door. Black Lung Smog threatens those without protection, and individual apartments can contain further hazards. The announced distance is relative to the racers' reduced size; a normal-sized apartment building has become a long, crowded course.
Carl's team starts in apartment 712. Its navigator identifies the elevator shaft, stairwell, sewer pipes, and routes within walls as possible ways downward. The elevator is out of order between the fifth and sixth floors, so even the seemingly quickest descent has an interruption. Shortly before the start, another rule changes every team's route: each apartment contains a ring, and a vehicle must pass through one ring on each of the seven floors. Every team is also assigned a particular mandatory ring. The Royal Court's lies in apartment 231 on the second floor. Carl's idea of reaching the lower floor through a direct utility passage would miss the required sequence. The finish at the lobby matters only after the team has actually traversed the building as instructed.
The sixth finish is treated as a pit stop with a two-hour interval rather than a return to ordinary safe-room access. The final heat then sends the survivors back through the same building under different conditions. Its endpoint is above rather than below them: portals to the eleventh floor stand on the roof. Carl eventually uses focused explosives to open a vertical passage through several floors toward those portals. That breach changes the available geography in an instant, but it does not cancel the rule requiring an intact conveyance for a valid finish. Osvaldo reaches for the exit outside his mount while it still survives, strikes the barrier at the portal, and is killed by Britney Proskurina. Team Flamengo is eliminated, leaving the Royal Court as the only remaining team in its heat. The building's final route shows the distinction that governs all seven venues: reaching a visible destination is useful only when the team has also satisfied the conditions attached to that place.