| World's Longest Rivers | 0 | - | 4.88 | 110,970 |
| Countries With No Rivers | 0 | - | 4.96 | 70,129 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 79,069 |
| Rivers of Europe Quiz | 0 | - | 4.90 | 49,166 |
| Tectonic Plates Map Quiz | 0 | - | 4.98 | 57,657 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 393,316 |
| Countries That Touch the Baltic Sea | 0 | - | 4.99 | 112,687 |
| North Sea Countries | 0 | - | 4.92 | 81,188 |
| Black Sea Countries | 0 | - | 4.87 | 57,707 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 61,796 |
| Caspian Sea Countries | 0 | - | 4.92 | 59,430 |
| Countries with the Shortest Coastlines | 0 | - | 4.82 | 54,834 |
| Seas on the World Map | 0 | - | 4.97 | 123,438 |
| Seas of the World | 0 | - | 5.00 | 131,689 |
| Famous Rivers | 0 | - | 4.75 | 99,516 |
| Most Populous River Basins | 0 | - | 4.57 | 37,877 |
| Rivers that Flow through the Most Countries | 0 | - | 4.52 | 37,841 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,569 |
| Countries with Fjords | 0 | - | 4.92 | 79,473 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.98 | 106,687 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 69,096 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 47,199 |
| Largest Lakes in the United States on a Map | 0 | - | 4.89 | 22,072 |
| American Countries With No Atlantic Coastline | 0 | - | 4.90 | 74,082 |
| Biggest City by River | 0 | - | 4.42 | 51,185 |
| Countries Bordering the Four Color Seas | 0 | - | 4.93 | 19,293 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 31,495 |
| City to River #1 | 0 | - | 4.53 | 24,808 |
| City to River #2 - Difficult | 0 | - | 4.51 | 14,250 |
| Largest Rivers by Discharge | 0 | - | 4.51 | 14,957 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 142,172 |
| Biggest Lakes in the World | 0 | - | 4.66 | 84,212 |
| Great Lakes Quiz | 0 | - | 4.76 | 46,877 |
| Cities on a Map of the Great Lakes | 0 | - | 4.42 | 41,612 |
| Megadiverse Countries | 0 | - | 4.96 | 126,868 |
| Rivers by City Quiz | 0 | - | 4.35 | 21,830 |
| Gulfs and Bays on the World Map | 0 | - | 4.58 | 27,395 |
| Famous Lakes Quiz | 0 | - | 4.49 | 23,010 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 35,153 |
| Landforms Quiz | 0 | - | 4.34 | 74,878 |
| Geologic Time Scale | 0 | - | 4.46 | 9,120 |
| Rivers on Borders | 0 | - | 4.06 | 22,003 |
| Seas that Touch the Most Countries | 0 | - | 4.72 | 90,885 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,015 |
| Atlantic Ocean General Knowledge | 0 | - | 4.72 | 20,140 |
| Indian Ocean General Knowledge | 0 | - | 4.51 | 21,289 |
| Bodies of Water by Cities | 0 | - | 4.79 | 26,982 |
| Landforms by Description Quiz | 0 | - | 4.38 | 25,597 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,749 |
| Boundary Waters | 0 | - | 4.93 | 82,070 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,510 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,814,745 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,015 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,826 |
| World Capitals Quiz | 0 | - | 5.00 | 4,581,873 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,178,586 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,233,307 |
| World Geography on a Map #1 | 0 | - | 4.93 | 68,333 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 85,735 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,948 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,663 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,410,268 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,400 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,097 |
| Members of the Arab League | 0 | - | 4.86 | 66,530 |
| Island Countries Quiz | 0 | - | 4.99 | 669,182 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,691 |
| Himalayan Countries | 0 | - | 4.94 | 108,627 |
| Andean Countries | 0 | - | 4.91 | 60,334 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,517 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,936 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,567 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,899 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,335 |
| Danube Countries | 0 | - | 4.96 | 57,265 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,269 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,327 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,811 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,497 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,140 |
| European Landlocked Countries | 0 | - | 4.99 | 137,274 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,896 |
| Countries with the Most Species | 0 | - | 4.99 | 90,079 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,437 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,055 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,343 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,126 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,924 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,159 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,985 |
| Countries in the Alps | 0 | - | 4.84 | 103,961 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,523 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,713 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,347 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,451 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,970 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,408 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,624 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,823 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,735 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,468 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,236 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,063 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,054 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,645 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,735 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,303 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,748 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,008 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,108 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,058 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,618 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,880 |
| Largest Countries By Category | 0 | - | 4.97 | 146,546 |
| Countries by Countries | 0 | - | 4.95 | 55,684 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,649 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,251 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,168 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,725 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,469 |
| Northernmost Countries | 0 | - | 4.99 | 331,127 |
| Countries of South America | 0 | - | 5.00 | 811,057 |
| Countries of Oceania | 0 | - | 5.00 | 914,926 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,613,815 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 77,189 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.99 | 136,373 |
| Western Europe Map Quiz | 0 | - | 4.87 | 89,748 |
| Top World Languages | 0 | - | 4.92 | 724,370 |
| Tourist Attraction by Negative Review | 0 | - | 4.91 | 60,612 |
| Who Controls It? #1 | 0 | - | 4.82 | 45,910 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 183,442 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 111,954 |
| Longest International Borders | 0 | - | 4.99 | 236,817 |
| Countries with Three Borders | 0 | - | 4.96 | 32,180 |
| Country Connect by Northernmost Point | 0 | - | 4.97 | 36,936 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 41,463 |
| Demonym of Every Country | 0 | - | 4.91 | 50,895 |
| Analogies of Countries #1 | 0 | - | 4.87 | 63,484 |
| Five Letter Geography #4 | 0 | - | 4.83 | 67,854 |
| Name a Valid Answer - Geography | 0 | - | 4.92 | 78,974 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,216 |
| Countries with Megacities | 0 | - | 4.99 | 202,088 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,592 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,070 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,398 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,000 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,371 |
| Global Cities on a World Map | 0 | - | 4.92 | 92,994 |
| Northernmost Capital Cities | 0 | - | 4.98 | 96,121 |
| Most Remote Capital Cities | 0 | - | 4.90 | 44,967 |
| Capital Cities: Ports and Saints | 0 | - | 4.94 | 35,692 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 93,377 |
| Same Letter Country and Capital | 0 | - | 4.99 | 130,380 |
| Countries by Capital City | 0 | - | 4.99 | 51,646 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 67,280 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 106,263 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 74,511 |
| Moved Capital Cities | 0 | - | 4.96 | 68,007 |
| Countries by Official Language | 0 | - | 4.96 | 175,386 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,740 |
| Countries in their Native Language | 0 | - | 4.98 | 180,755 |
| Independence from Whom | 0 | - | 4.99 | 189,572 |
| Subdivisions by Country | 0 | - | 4.85 | 46,928 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,773 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,067 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,640 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,852 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,437 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,939 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,748 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,088 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,761 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,875 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,147 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,312 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,993 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,537 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,445 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,073 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,793 |
| World Map Quiz | 0 | - | 4.90 | 51,595 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,834 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,809 |
| Countries by Founding Story | 0 | - | 4.93 | 55,962 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,912 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,914 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,278 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,976 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,742 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,157 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,385 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,160 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,650 |
| Widest Countries East to West | 0 | - | 4.93 | 120,622 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,138 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,650 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,879 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,459 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,913 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,722 |
