| 411,838 | Countries with the Longest Coastlines |
| 162,677 | Draw All Country Borders and Borderless Countries |
| 155,325 | Seas of the World |
| 138,073 | Top 10 European Countries by Coastline |
| 134,682 | Seas on the World Map |
| 121,771 | World's Longest Rivers |
| 115,820 | Countries That Touch the Baltic Sea |
| 115,110 | Name a Valid Country Bordering Each Sea |
| 114,998 | Five Countries with the Longest Coastline by Continent |
| 104,674 | Famous Rivers |
| 98,949 | 100 Rivers on a World Map |
| 96,284 | Top 10 Asian Countries by Coastline |
| 96,078 | Seas that Touch the Most Countries |
| 92,108 | American Countries With No Atlantic Coastline |
| 89,148 | Biggest Lakes in the World |
| 88,184 | Top 10 American Countries by Coastline |
| 87,140 | World's Longest Rivers on a Map |
| 86,749 | North Sea Countries |
| 84,466 | Seas of Europe |
| 78,258 | Trace the Coast of Europe with a Map |
| 76,188 | Countries With No Rivers |
| 75,326 | Bay of Bengal Countries With an Empty Map |
| 74,401 | Countries Farthest From the Sea |
| 71,540 | Bodies of Water by Satellite Image #1 |
| 70,922 | Countries That Touch the Adriatic Sea |
| 67,019 | Countries with the Shortest Coastlines |
| 66,726 | Countries Closest to the Aegean Sea |
| 65,780 | Rivers of the United States |
| 65,663 | African Great Lakes |
| 65,125 | Countries That Touch the Red Sea |
| 65,098 | 100 Longest Rivers in Europe - with a Map |
| 63,224 | Caspian Sea Countries |
| 61,471 | Name a Valid Country on Each River |
| 60,573 | African Great Lake Countries with an Empty Map |
| 60,408 | Black Sea Countries |
| 59,049 | Trace the Coast of Afro-Eurasia with a Map |
| 57,582 | South China Sea Countries |
| 57,408 | Capital Cities by Body of Water |
| 55,856 | Rivers of Europe Quiz |
| 55,750 | Mississippi River States Empty Map Quiz |
| 55,406 | Trace the Coast of the Americas with a Map |
| 55,328 | Trace the Coast of the World Map |
| 53,101 | Mekong River Countries Empty Map Quiz |
| 52,747 | Biggest City by River |
| 51,202 | Bodies of Water on the World Map |
| 50,755 | Top 10 U.S. States with the Longest Coastline |
| 50,411 | Nile River Basin Countries on a Map |
| 50,223 | Great Lakes Quiz |
| 48,681 | Sea in the Answers |
| 48,263 | Capitals by River |
| 47,860 | Top 10 African Countries by Coastline |
| 45,272 | Rivers and Lakes whose Names are Countries |
| 44,401 | Cities on a Map of the Great Lakes |
| 40,199 | Rivers that Flow through the Most Countries |
| 39,595 | Most Populous River Basins |
| 39,457 | Major U.S. Rivers with State Names |
| 39,162 | Amazon... or Nile? |
| 38,932 | 10 Longest Rivers in the United States |
| 37,964 | Draw the Coast of the Mediterranean on the Map |
| 37,181 | 50 Rivers on a World Map |
| 35,980 | Bodies of Water around the Arabian Peninsula |
| 35,778 | City to River #1 |
| 33,027 | Rivers in History |
| 32,735 | Rivers A-Z |
| 31,799 | Countries with the Most Lakes Over 100 Km² |
| 31,667 | Rivers by City |
| 30,305 | UK Rivers Map Quiz |
| 30,111 | Gulfs and Bays on the World Map |
| 29,766 | Largest Lakes in the United States on a Map |
| 28,863 | States and Provinces that Touch the Great Lakes |
| 28,515 | Bodies of Water by Cities |
| 28,465 | Countries with the Longest Coastline Bordering Each Other |
| 27,843 | Trace the Coast and International Borders of the USA |
| 26,636 | Name the Sea from a Clue |
| 26,489 | Cities on the Mediterranean Sea by a Clue |
| 25,883 | City to River #2 - Difficult |
| 24,963 | The Five Oceans Map Quiz |
| 23,954 | Famous Lakes Quiz |
| 23,136 | Countries by Coastline Per Capita |
| 22,866 | Countries Bordering the Four Color Seas |
| 22,733 | Texas Rivers Map Quiz |
| 22,658 | Rivers on Borders |
| 22,178 | Indian Ocean General Knowledge |
| 21,194 | Atlantic Ocean General Knowledge |
| 21,042 | U.S. State Capitals Closest to the Great Lakes |
| 20,820 | U.S. States with Shortest Maximum Distances to the Ocean |
| 19,627 | Bodies of Water by Satellite Image #2 |
| 19,195 | Lakes in the United States by Clue |
| 18,319 | U.S. State Capitals Closest to the Mississippi River |
| 18,210 | U.S. States Bordering the Great Lakes |
| 15,959 | Largest Rivers by Discharge |
| 14,533 | U.S. States by Five Longest Rivers |
| 13,755 | Longest Rivers in the UK |
| 10,727 | Huge List of Famous Lakes |
| 9,640 | 100 Longest Rivers in North America - with a Map |
| 8,542 | Which Great Lake? – Click Quiz |
| 7,949 | Seas of the World - Map Quiz |
| 7,143 | Straits on the World Map |
| 6,746 | Ultimate Rivers of the UK (with map) |
| 6,438 | Great Lakes - Map Quiz |
| 5,759 | Longest U.S. Rivers on a Map |
| 5,506 | 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 |
| 4,402 | 100 Longest Rivers in the World - with a Map |
| 4,380 | US States along the coastline and border |
| 4,169 | Countries with a Longer Coastline than Their Neighbors |
| 4,155 | 100 Longest Rivers in South America - with a Map |
| 4,150 | 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 |
| 3,911 | 100 Longest Rivers in Asia - with a Map |
| 3,901 | 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 |
| 3,048 | Name a Valid Country on Each River |
| 3,032 | 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 |
| 2,751 | Five Longest Rivers by Continent |
| 2,736 | Biggest countries with the smallest coastline |
| 2,726 | World's Longest Rivers |
| 2,625 | European Rivers - Sudden Death |
| 2,598 | Famous Lakes on a World Map |
| 2,570 | 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 |
| 2,312 | Rivers in the Map of Europe |
| 2,306 | 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 |
| 2,055 | 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 |
| 1,873 | Countries With Highest Coast-to-Land-Border Ratio |
| 1,873 | Fill the world map by naming rivers |
| 1,874 | Seas of the World (hard) |
| 1,817 | Countries with Longest Maximum Distances to the Ocean |
| 1,800 | 100 Seas of the World by Bordering Sea in 30 seconds |
| 1,792 | 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 |
| 1,537 | 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 |
| 1,428 | 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 |
| 1,366 | Multiple Capitals on Rivers |
| 1,346 | Lakes A-Z |
| 1,332 | Groups of Countries By Bordering Sea #1 |
| 1,329 | Croatian rivers |
| 1,324 | Baltic Sea General Knowledge |
| 1,310 | British Rivers to Cities — Click Quiz #1 |
| 1,307 | Seas of the World |
| 1,289 | Most Populous Countries by Bordering Sea |
| 1,278 | Ultimate "Lake" Geography Quiz |
| 1,271 | Small Countries with the Most Coastline - with Exceptions |
| 1,237 | Cities in the Colorado River Basin on a Map |
| 1,219 | Countries by River |
| 1,212 | Countries without coastline |
| 1,203 | Name a Valid Sea |
| 1,190 | Caribbean Sea General Knowledge |
| 1,187 | Huge List of U.S. Bodies of Water |
| 1,172 | River Mouths on the Map |
| 1,168 | Three Biggest Cities by Body of Water |
| 1,152 | Largest River Basins of Europe on a Map |
| 1,145 | Five Countries With the Longest Coastline by Continent |
| 1,140 | Answers Contain "Bay" |
| 1,140 | Countries named after rivers |
| 1,138 | Black Sea Cities on a Map |
| 1,116 | Longest Rivers in the US |
| 1,108 | Biggest rivers in the world by drainage basins area |
| 1,106 | Largest Countries with the Least Coastline |
| 1,105 | 50 Biggest Cities along the Rhine River with a Blank Map |
| 1,047 | Countries with the Most Long Rivers |
| 1,021 | Countries that Block Other Countries from Water |
| 1,020 | Arctic Ocean General Knowledge |
| 1,016 | Black Sea General Knowledge |
