| World's Longest Rivers | 0 | - | 4.88 | 121,156 |
| Countries With No Rivers | 0 | - | 4.96 | 76,067 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,291 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,927 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,657 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,588 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,346 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,759 |
| North Sea Countries | 0 | - | 4.92 | 86,646 |
| Black Sea Countries | 0 | - | 4.87 | 60,357 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,043 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,136 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,972 |
| Seas on the World Map | 0 | - | 4.96 | 134,317 |
| Seas of the World | 0 | - | 5.00 | 154,549 |
| Famous Rivers | 0 | - | 4.74 | 104,557 |
| City to River #1 | 0 | - | 4.59 | 35,749 |
| Most Populous River Basins | 0 | - | 4.61 | 39,555 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,131 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,399 |
| Countries with Fjords | 0 | - | 4.93 | 100,253 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,791 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,276 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,304 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,204 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,707 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,968 |
| Biggest City by River | 0 | - | 4.41 | 52,706 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,782 |
| Rivers by City | 0 | - | 4.38 | 31,643 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,805 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,926 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 161,980 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,253 |
| Biggest Lakes in the World | 0 | - | 4.62 | 89,039 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,137 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,475 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,330 |
| Megadiverse Countries | 0 | - | 4.97 | 133,950 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,031 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,918 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,346 |
| Geologic Time Scale | 0 | - | 4.46 | 9,930 |
| Rivers on Borders | 0 | - | 4.02 | 22,640 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 95,963 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,739 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,167 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,156 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,468 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,980 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,318 |
| Boundary Waters | 0 | - | 4.92 | 88,073 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,843 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,370 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,404 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,892 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,965,785 |
| Landlocked Countries | 0 | - | 4.99 | 414,184 |
| World Capitals Quiz | 0 | - | 5.00 | 5,035,183 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,597 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,207 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,063 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,735 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,153 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,713 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,572,378 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,342 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,146 |
| Island Countries | 0 | - | 4.99 | 707,831 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,814 |
| Himalayan Countries | 0 | - | 4.95 | 135,543 |
| Andean Countries | 0 | - | 4.94 | 82,937 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,299 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,335 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,001 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,671 |
| Danube Countries | 0 | - | 4.97 | 71,129 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,832 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,595 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,601 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,513 |
| European Landlocked Countries | 0 | - | 4.99 | 145,827 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,293 |
| Countries with the Most Species | 0 | - | 4.99 | 95,278 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,434 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,216 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,386 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,988 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,616 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,995 |
| Countries in the Alps | 0 | - | 4.86 | 116,917 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,633 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,361 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,058 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,470 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,241 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,050 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,643 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,809 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,503 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,112 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,214 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,074 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,492 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,801 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,791 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,185 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,701 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,287 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,851 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,593 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,865 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,635 |
| Largest Countries By Category | 0 | - | 4.97 | 156,854 |
| Countries by Countries | 0 | - | 4.96 | 62,315 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,498 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,980 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,347 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,824 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,236 |
| Northernmost Countries | 0 | - | 4.99 | 358,025 |
| Countries of South America | 0 | - | 5.00 | 915,793 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,809 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,359 |
| "Land" Countries | 0 | - | 4.98 | 333,795 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,835 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,778 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,509 |
| Top World Languages | 0 | - | 4.92 | 813,854 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,601 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,252 |
| Rivers A-Z | 0 | - | 4.35 | 32,692 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,581 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,669 |
| Longest International Borders | 0 | - | 4.99 | 263,854 |
| Countries with Three Borders | 0 | - | 4.96 | 36,224 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,628 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,721 |
| Demonym of Every Country | 0 | - | 4.91 | 58,698 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,179 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,582 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,563 |
| Countries with Megacities | 0 | - | 4.99 | 247,452 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,407 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,165 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,818 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,080 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,915 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,085 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,726 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,679 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,747 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,583 |
| Countries by Capital City | 0 | - | 5.00 | 66,791 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,410 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,969 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,462 |
| Moved Capital Cities | 0 | - | 4.96 | 73,645 |
| Countries by Official Language | 0 | - | 4.95 | 192,896 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,299 |
| Countries in their Native Language | 0 | - | 4.99 | 196,748 |
| Independence from Whom | 0 | - | 4.99 | 209,844 |
| Subdivisions by Country | 0 | - | 4.86 | 50,094 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,923 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,947 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,457 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,737 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,040 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,156 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,202 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,242 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,757 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,708 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,449 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,537 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,530 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,719 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,050 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,930 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,738 |
| World Map Quiz | 0 | - | 4.81 | 63,613 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,006 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,397 |
| Countries by Founding Story | 0 | - | 4.95 | 76,599 |
| Countries by Road Signs | 0 | - | 4.98 | 53,165 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,473 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,227 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,007 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,928 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,920 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,115 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,328 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,978 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,374 |
| Widest Countries East to West | 0 | - | 4.92 | 128,661 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,223 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,300 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,594 |
