| World's Longest Rivers | 0 | - | 4.89 | 137,827 |
| Countries With No Rivers | 0 | - | 4.96 | 77,265 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,170 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,479 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,015 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,267 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,228 |
| North Sea Countries | 0 | - | 4.92 | 87,796 |
| Black Sea Countries | 0 | - | 4.87 | 60,808 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,668 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,760 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,429 |
| Seas on the World Map | 0 | - | 4.96 | 136,141 |
| Seas of the World | 0 | - | 5.00 | 158,909 |
| Famous Rivers | 0 | - | 4.75 | 105,333 |
| City to River #1 | 0 | - | 4.59 | 35,920 |
| Most Populous River Basins | 0 | - | 4.55 | 39,842 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,525 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,261 |
| Countries with Fjords | 0 | - | 4.94 | 101,622 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,118 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,088 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,957 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,765 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,205 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,911 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,324 |
| Rivers by City | 0 | - | 4.38 | 31,786 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,277 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,103 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,952 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,482 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,998 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,711 |
| Biggest City by River | 0 | - | 4.38 | 52,988 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,457 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,934 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,775 |
| Megadiverse Countries | 0 | - | 4.96 | 149,511 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,444 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,088 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,704 |
| Geologic Time Scale | 0 | - | 4.41 | 10,085 |
| Rivers on Borders | 0 | - | 4.02 | 22,756 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,184 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,862 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,325 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,298 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,747 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,041 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,910 |
| Boundary Waters | 0 | - | 4.92 | 88,854 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,474 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,865 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,595 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,082 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,986,853 |
| Landlocked Countries | 0 | - | 4.99 | 427,463 |
| World Capitals Quiz | 0 | - | 5.00 | 5,115,308 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,943 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,000 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,536 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,197 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,215 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,816 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,781 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,102 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,491 |
| Island Countries | 0 | - | 4.99 | 713,084 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,012 |
| Himalayan Countries | 0 | - | 4.93 | 140,911 |
| Andean Countries | 0 | - | 4.94 | 85,848 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,960 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,555 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,500 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,717 |
| Danube Countries | 0 | - | 4.97 | 72,577 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,838 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,997 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,486 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,957 |
| European Landlocked Countries | 0 | - | 4.99 | 147,798 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,568 |
| Countries with the Most Species | 0 | - | 4.99 | 103,657 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,674 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,822 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,962 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,940 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,691 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,148 |
| Countries in the Alps | 0 | - | 4.87 | 119,008 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,056 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,198 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,076 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,196 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,154 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,408 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,624 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,013 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,522 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,329 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,966 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,841 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,689 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,942 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,044 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,189 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,753 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,619 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,865 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,429 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,559 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,630 |
| Largest Countries By Category | 0 | - | 4.97 | 159,126 |
| Countries by Countries | 0 | - | 4.97 | 63,825 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,482 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,452 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,714 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,533 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,576 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,253 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,426 |
| Northernmost Countries | 0 | - | 4.99 | 364,701 |
| Countries of South America | 0 | - | 5.00 | 934,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,879 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,775 |
| "Land" Countries | 0 | - | 4.98 | 339,086 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,615 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,603 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,029 |
| Top World Languages | 0 | - | 4.92 | 831,563 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,904 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,662 |
| Rivers A-Z | 0 | - | 4.35 | 32,876 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,464 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,675 |
| Longest International Borders | 0 | - | 4.99 | 266,034 |
| Countries with Three Borders | 0 | - | 4.96 | 36,841 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,435 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,584 |
| Demonym of Every Country | 0 | - | 4.90 | 61,661 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,785 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,167 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,566 |
| Countries with Megacities | 0 | - | 4.99 | 267,999 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,215 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,372 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,547 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,475 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,542 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,596 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,105 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,370 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,482 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,437 |
| Countries by Capital City | 0 | - | 5.00 | 69,683 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,198 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,375 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,988 |
| Moved Capital Cities | 0 | - | 4.96 | 74,745 |
| Countries by Official Language | 0 | - | 4.95 | 196,274 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,010 |
| Countries in their Native Language | 0 | - | 4.99 | 199,991 |
| Independence from Whom | 0 | - | 4.99 | 213,467 |
| Subdivisions by Country | 0 | - | 4.87 | 50,676 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,710 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,174 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,589 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,828 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,265 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,511 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,326 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,640 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,188 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,291 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,835 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,506 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,520 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,230 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,652 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,987 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,763 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,808 |
| World Map Quiz | 0 | - | 4.81 | 65,955 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,037 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,836 |
| Countries by Founding Story | 0 | - | 4.95 | 77,924 |
| Countries by Road Signs | 0 | - | 4.98 | 54,469 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,567 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,259 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,729 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,996 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,581 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,695 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,873 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,776 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,976 |
| Widest Countries East to West | 0 | - | 4.92 | 130,882 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,634 |
