| 411,854 | Countries with the Longest Coastlines |
| 162,701 | Draw All Country Borders and Borderless Countries |
| 155,351 | Seas of the World |
| 138,079 | Top 10 European Countries by Coastline |
| 134,702 | Seas on the World Map |
| 121,782 | World's Longest Rivers |
| 115,828 | Countries That Touch the Baltic Sea |
| 115,120 | Name a Valid Country Bordering Each Sea |
| 115,004 | Five Countries with the Longest Coastline by Continent |
| 104,678 | Famous Rivers |
| 100,436 | Countries with Fjords |
| 98,990 | 100 Rivers on a World Map |
| 96,286 | Top 10 Asian Countries by Coastline |
| 96,085 | Seas that Touch the Most Countries |
| 92,113 | American Countries With No Atlantic Coastline |
| 91,574 | Landforms Fill in the Blank |
| 89,152 | Biggest Lakes in the World |
| 88,185 | Top 10 American Countries by Coastline |
| 87,150 | World's Longest Rivers on a Map |
| 86,760 | North Sea Countries |
| 84,470 | Seas of Europe |
| 83,490 | Natural Features of Countries #1 |
| 80,838 | Tectonic Plates Map Quiz |
| 78,265 | Trace the Coast of Europe with a Map |
| 76,189 | Countries With No Rivers |
| 75,330 | Bay of Bengal Countries With an Empty Map |
| 74,408 | Countries Farthest From the Sea |
| 71,548 | Bodies of Water by Satellite Image #1 |
| 70,923 | Countries That Touch the Adriatic Sea |
| 70,759 | U.S. Cities with Landforms in The Name |
| 67,021 | Countries with the Shortest Coastlines |
| 66,727 | Countries Closest to the Aegean Sea |
| 65,812 | Rivers of the United States |
| 65,674 | African Great Lakes |
| 65,128 | Countries That Touch the Red Sea |
| 65,104 | 100 Longest Rivers in Europe - with a Map |
| 63,226 | Caspian Sea Countries |
| 61,479 | Name a Valid Country on Each River |
| 60,576 | African Great Lake Countries with an Empty Map |
| 60,413 | Black Sea Countries |
| 59,051 | Trace the Coast of Afro-Eurasia with a Map |
| 57,582 | South China Sea Countries |
| 57,416 | Capital Cities by Body of Water |
| 55,864 | Rivers of Europe Quiz |
| 55,757 | Mississippi River States Empty Map Quiz |
| 55,412 | Trace the Coast of the Americas with a Map |
| 55,329 | Trace the Coast of the World Map |
| 53,104 | Mekong River Countries Empty Map Quiz |
| 52,747 | Biggest City by River |
| 51,937 | Landforms by Country |
| 51,216 | Bodies of Water on the World Map |
| 50,755 | Top 10 U.S. States with the Longest Coastline |
| 50,414 | Nile River Basin Countries on a Map |
| 50,346 | Movies with Landforms in the Name |
| 50,297 | Layers of the Earth and Atmosphere |
| 50,228 | Great Lakes Quiz |
| 48,685 | Sea in the Answers |
| 48,265 | Capitals by River |
| 47,860 | Top 10 African Countries by Coastline |
| 45,277 | Rivers and Lakes whose Names are Countries |
| 44,401 | Cities on a Map of the Great Lakes |
| 40,204 | Rivers that Flow through the Most Countries |
| 39,976 | Geological Extremes |
| 39,595 | Most Populous River Basins |
| 39,459 | Major U.S. Rivers with State Names |
| 39,163 | Amazon... or Nile? |
| 38,937 | 10 Longest Rivers in the United States |
| 37,970 | Draw the Coast of the Mediterranean on the Map |
| 37,380 | Natural Features of Countries #2 |
| 37,189 | 50 Rivers on a World Map |
| 35,982 | Bodies of Water around the Arabian Peninsula |
| 35,780 | City to River #1 |
| 35,439 | Tectonic Plates on a Map |
| 35,433 | Asian Physical Geography |
| 33,419 | European Physical Geography |
| 33,030 | Rivers in History |
| 32,735 | Rivers A-Z |
| 31,801 | Countries with the Most Lakes Over 100 Km² |
| 31,669 | Rivers by City |
| 31,614 | African Physical Geography |
| 30,305 | UK Rivers Map Quiz |
| 30,111 | Gulfs and Bays on the World Map |
| 29,774 | Largest Lakes in the United States on a Map |
| 28,863 | States and Provinces that Touch the Great Lakes |
| 28,516 | Bodies of Water by Cities |
| 28,468 | Countries with the Longest Coastline Bordering Each Other |
| 27,846 | Trace the Coast and International Borders of the USA |
| 26,825 | U.S. States by Landform Quiz |
| 26,639 | Name the Sea from a Clue |
| 26,489 | Cities on the Mediterranean Sea by a Clue |
| 25,994 | Landforms by Description Quiz |
| 25,886 | City to River #2 - Difficult |
| 24,966 | The Five Oceans Map Quiz |
| 23,955 | Famous Lakes Quiz |
| 23,137 | Countries by Coastline Per Capita |
| 22,870 | Countries Bordering the Four Color Seas |
| 22,733 | Texas Rivers Map Quiz |
| 22,658 | Rivers on Borders |
| 22,180 | Indian Ocean General Knowledge |
| 21,194 | Atlantic Ocean General Knowledge |
| 21,043 | U.S. State Capitals Closest to the Great Lakes |
| 20,831 | U.S. States with Shortest Maximum Distances to the Ocean |
| 19,628 | Bodies of Water by Satellite Image #2 |
| 19,197 | Lakes in the United States by Clue |
| 18,320 | U.S. State Capitals Closest to the Mississippi River |
| 18,308 | South American Physical Geography |
| 18,213 | U.S. States Bordering the Great Lakes |
| 17,143 | Human Biology Multiple Choice Quiz #2 |
| 15,960 | Largest Rivers by Discharge |
| 14,540 | U.S. States by Five Longest Rivers |
| 13,755 | Longest Rivers in the UK |
| 12,654 | Oceania Physical Geography |
| 11,673 | Human Biology Multiple Choice Quiz #1 |
| 10,730 | Huge List of Famous Lakes |
| 9,967 | Geologic Time Scale |
| 10,806 | Terrestrial Biomes - Map Quiz |
| 9,642 | 100 Longest Rivers in North America - with a Map |
| 8,544 | Which Great Lake? – Click Quiz |
| 7,951 | Seas of the World - Map Quiz |
| 7,143 | Straits on the World Map |
| 6,746 | Ultimate Rivers of the UK (with map) |
| 6,439 | Great Lakes - Map Quiz |
| 5,761 | Longest U.S. Rivers on a Map |
| 5,508 | European Bodies of Water (with Map!) |
| 5,280 | Five Countries with the Shortest Coastline by Continent |
| 4,615 | Baltic Sea Countries with an Empty Map |
| 4,553 | 25 Largest Bodies of Water |
| 4,404 | 100 Longest Rivers in the World - with a Map |
| 4,380 | US States along the coastline and border |
| 4,173 | Countries with a Longer Coastline than Their Neighbors |
| 4,157 | 100 Longest Rivers in South America - with a Map |
| 4,155 | 100 Longest Rivers in Africa - with a Map |
| 4,085 | Largest River Basins by Area on a Map |
| 3,971 | Trace the coast of the world (Hard(no map)) |
| 3,942 | Oregon Rivers - Map Quiz |
| 3,918 | 100 Longest Rivers in Asia - with a Map |
| 3,902 | River Deltas on the Map |
| 3,810 | German Rivers on a Map |
| 3,773 | Trace the Coast of Europe by Guessing the Biggest Cities |
| 3,708 | Major Rivers of the World - Source US Dept of Commerce, NOAA |
| 3,649 | Countries Closest to the Red Sea |
| 3,428 | They’re Rocks - Sudden Death |
| 3,343 | Peninsulas A-Z |
| 3,051 | Name a Valid Country on Each River |
| 3,033 | Longest Rivers - Sudden Death |
| 3,015 | UK Cities, Towns & their Rivers (with map) |
| 2,961 | 50 Longest Rivers in the World |
| 2,876 | 100 Biggest Natural Lakes in Europe with a Map |
| 2,866 | Danube River Basin Countries on a Map |
| 2,809 | World's Dirtiest Rivers |
| 2,752 | Geologic Eons, Eras and Periods |
| 2,751 | Five Longest Rivers by Continent |
| 2,736 | Biggest countries with the smallest coastline |
| 2,726 | World's Longest Rivers |
| 2,629 | Biology General Knowledge |
| 2,625 | European Rivers - Sudden Death |
| 2,598 | Famous Lakes on a World Map |
| 2,571 | 50 Largest Lakes in the World Quiz |
| 2,427 | Flags of Countries That Border the North Sea |
| 2,340 | Countries Bordering the Aegean Sea - Map Quiz |
| 2,325 | Biology General Knowledge #3 |
| 2,312 | Rivers in the Map of Europe |
| 2,307 | Sequential US Rivers and Cities |
| 2,209 | Landlocked Countries Whose Only Borders are with Countries With Coastlines |
| 2,208 | Countries that Touch the Most Seas |
| 2,155 | Rivers of Great Britain |
| 2,102 | Mainland Countries With the Shortest Coastlines |
| 2,098 | Longest rivers in Poland |
| 2,095 | Rivers - Sudden Death |
| 2,067 | Longest Rivers in Countries |
| 2,064 | Largest Deserts |
| 2,055 | Seas - Sudden Death |
| 2,017 | Seas on the Map of Europe |
| 1,994 | Name a Valid River |
| 1,977 | Countries with Two or More Coastlines |
| 1,938 | Countries with shortest coastline |
| 1,879 | Countries with multiple coastlines |
| 1,876 | Seas of the World (hard) |
| 1,873 | Countries With Highest Coast-to-Land-Border Ratio |
| 1,873 | Fill the world map by naming rivers |
| 1,817 | Countries with Longest Maximum Distances to the Ocean |
| 1,800 | 100 Seas of the World by Bordering Sea in 30 seconds |
| 1,793 | 100 Longest Rivers in Oceania - with a Map |
| 1,787 | Countries with the longest Total Borders and Coastline |
| 1,780 | Cross the River |
| 1,760 | Rivers by Country |
| 1,687 | Countries Bordering the Indian Ocean Empty Map Quiz |
| 1,644 | Mississippi Basin Rivers on a Map - Extreme |
| 1,594 | Five Biggest Countries by Sea |
| 1,559 | World Rivers Map Quiz |
| 1,552 | Countries with the Most Volcanoes |
| 1,537 | Countries with the most long rivers |
| 1,536 | Biggest World Cities on Lakes |
| 1,515 | Mississippi-Missouri Basin States and Provinces |
| 1,493 | Rivers of Russia |
| 1,429 | Sequential Cities in the Nile River Basin |
| 1,395 | 40 Lakes on the World Map |
| 1,394 | Countries with less than 100km of Coastline |
| 1,371 | All Mediterranean seas |
