The 12 Underwater Worlds You Race Through in Krillocity
Krillocity's track is one long run of underwater tunnels through twelve worlds, from a sunlit kelp forest to caverns of ice. Here is each world in the order you swim them, what to look out for, and how many of them a race can carry you through.
Introduction
Krillocity's race track runs through twelve underwater worlds, one after another. This guide goes through each one in order: how long it is, what it looks like and what to look out for as you swim through it.
How the Track Is Laid Out
The twelve worlds run end to end in a loop of about 23 km, each one between 1.8 and 2.1 km long, and each fades into the next over the last stretch of its tunnel rather than ending at a wall. Past the twelfth, the first comes round again with its rock laid out differently, so the track never repeats exactly.
A race does not always start at the beginning. Each race sets off from the head of one of the worlds, chosen from the room and the race number, so two races in a row usually show you two different places. Every racer in a race swims the same stretch, in lanes of their own.
The tunnels are pixel art, drawn in layers: the floor you swim over, the walls and ledges beside the track, the open water behind, and on the horizon the land the world belongs to, far off and huge. Now and then something vast crosses that horizon, a whale or a manta. Every 500 m you pass a gate built from whatever the world is made of.
The Twelve Worlds, in Order
1. The Kelp Run
About 2,000 m. The first world on the loop, and one of the sunniest. Sunlight slants down through the water onto sand, kelp grows from the ledges, and schools of fish and rays drift past. On the horizon, giant kelp stands in groves in front of a range of mountains.
2. The Coral Arches
About 2,100 m, the longest world on the track. A reef in full colour: coral and sea fans on the ledges, crabs on the floor, and gates grown out of coral. Far off, table corals are stacked like pagodas under a great arch of coral.
3. The Wreck Passage
About 1,920 m. The light drops toward twilight and the track runs through the hulls of sunken ships, past rows of portholes, masts and lanterns hanging overhead. Eels hide in the wreckage. On the horizon stands a ship graveyard and its lighthouse.
4. The Sunken Aqueduct
About 1,960 m. A drowned city. Masonry walls, a mosaic floor, colonnades and a temple beside the track, and on the horizon the city itself: its aqueduct, its domes and one lit tower.
5. The Leviathan's Ribs
About 1,900 m. Here the rock is bone. The ribs of something enormous arch over the track, a skull lies half buried in the silt, tube worms grow on the ledges and marine snow falls through the dark water. Far off you can make out the rest of the beast, its spine and its skull.
6. The Glow Grotto
About 1,960 m. A green-black cavern lit by lanterns and glowing mushrooms the size of trees. Spores drift past, and jellies, moths and wisps of light hang in the dark. Even the gates are mushroom caps.
7. The Crystal Vein
About 1,860 m. An amethyst fault: a violet crystal floor, geodes broken open along the walls, crystal spires on the horizon and sparks in the water.
8. The Lava Tubes
About 1,820 m. Black basalt, vents breathing heat, falls of glowing lava and embers drifting through the water. Volcanoes and their smokers stand on the horizon.
9. The Clockwork Conduit
About 1,780 m, the shortest world. A machine under the sea: plated floors, gears, copper rings and gates made of gears, with the towers of a machine city and half-sunk gears far behind.
10. The Rift
About 1,880 m. One of the darkest worlds on the track. Shards of rock and teeth of stone stand up from the shale, anglerfish and sea serpents hunt, and lights glow far down in the rift. Look up, and something enormous is looking back.
11. The Jelly Nebula
About 1,920 m. The walls fall away into a void with a floor of glass. Islands float overhead, siphonophores trail through the water, and jellies the size of hills drift across the horizon.
12. The Ice Caverns
About 1,920 m. Walls of ice, icicles overhead, arches of ice across the track and a glacier behind, with keels of ice hanging down from above. Whales pass in the cold water before the loop comes back round to the Kelp Run.
How Many Worlds Will You See?
Every point an answer scores swims you 10 m, so a world is roughly 180 to 210 points long. A race of common answers might cover half a world. The leaderboard only takes races of at least 1,000 m, and when we wrote this, every race in its top ten was longer than 8 km: four worlds or more in a couple of minutes of typing. To swim further, see our strategy guide for naming more answers.
The avatars you own in Krillion Unlimited swim these tunnels with you, since the two games share a wallet and a shop. If the race itself is new to you, watch one race replayed prompt by prompt, or go and see the tunnels for yourself.
About the author
Emma co-founded Daily to turn the simple puzzles she loved as a kid into a shared daily ritual. She grew up racing through word and logic games and still believes the best ones are equal parts nostalgia and genuine challenge.