| World's Longest Rivers | 0 | - | 4.90 | 136,724 |
| Countries With No Rivers | 0 | - | 4.96 | 76,815 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,122 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,796 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,446 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,469 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,080 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,025 |
| North Sea Countries | 0 | - | 4.92 | 87,393 |
| Black Sea Countries | 0 | - | 4.87 | 60,602 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,383 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,479 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,235 |
| Seas on the World Map | 0 | - | 4.96 | 135,350 |
| Seas of the World | 0 | - | 5.00 | 156,912 |
| Famous Rivers | 0 | - | 4.75 | 104,969 |
| City to River #1 | 0 | - | 4.59 | 35,848 |
| Most Populous River Basins | 0 | - | 4.55 | 39,716 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,350 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,827 |
| Countries with Fjords | 0 | - | 4.94 | 100,901 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,521 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,704 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,683 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,494 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,967 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,469 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,082 |
| Rivers by City | 0 | - | 4.38 | 31,717 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,058 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,020 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,846 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,885 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,606 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,402 |
| Biggest City by River | 0 | - | 4.38 | 52,857 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,729 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,557 |
| Megadiverse Countries | 0 | - | 4.96 | 134,886 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,255 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,005 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,516 |
| Geologic Time Scale | 0 | - | 4.41 | 10,014 |
| Rivers on Borders | 0 | - | 4.02 | 22,694 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,806 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,799 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,240 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,236 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,627 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,018 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,672 |
| Boundary Waters | 0 | - | 4.92 | 88,469 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,170 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,095 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,457 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,465 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,462,217 |
| Landlocked Countries | 0 | - | 4.99 | 420,558 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,024 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,809 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,610 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,838 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,954 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,185 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,314 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,485 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,053 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,250 |
| Island Countries | 0 | - | 4.99 | 710,400 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,719 |
| Himalayan Countries | 0 | - | 4.95 | 138,090 |
| Andean Countries | 0 | - | 4.95 | 84,270 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,491 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,337 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,122 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,567 |
| Danube Countries | 0 | - | 4.97 | 71,836 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,798 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,239 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,977 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,429 |
| European Landlocked Countries | 0 | - | 4.99 | 146,967 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,381 |
| Countries with the Most Species | 0 | - | 4.99 | 103,093 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,533 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,659 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,446 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,117 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,506 |
| Countries in the Alps | 0 | - | 4.87 | 117,963 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,505 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,717 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,455 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,307 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,833 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,471 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,341 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,078 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,705 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,072 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,368 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,547 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,181 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,691 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,823 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,191 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,674 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,112 |
| Largest Countries By Category | 0 | - | 4.97 | 157,934 |
| Countries by Countries | 0 | - | 4.97 | 63,014 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,468 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,218 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,513 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,091 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,807 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,511 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,909 |
| Northernmost Countries | 0 | - | 4.99 | 361,235 |
| Countries of South America | 0 | - | 5.00 | 925,134 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,075 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,994 |
| "Land" Countries | 0 | - | 4.98 | 336,450 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,736 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,560 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,795 |
| Top World Languages | 0 | - | 4.92 | 822,272 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,358 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,443 |
| Rivers A-Z | 0 | - | 4.35 | 32,781 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,600 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,190 |
| Longest International Borders | 0 | - | 4.99 | 264,951 |
| Countries with Three Borders | 0 | - | 4.96 | 36,534 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,014 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,133 |
| Demonym of Every Country | 0 | - | 4.91 | 60,167 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,399 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,361 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,472 |
| Countries with Megacities | 0 | - | 4.99 | 263,447 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,309 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,255 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,606 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,291 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,134 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,252 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,404 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,495 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,228 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,002 |
| Countries by Capital City | 0 | - | 5.00 | 68,281 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,166 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,651 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,197 |
| Moved Capital Cities | 0 | - | 4.96 | 74,211 |
| Countries by Official Language | 0 | - | 4.95 | 194,942 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,961 |
| Countries in their Native Language | 0 | - | 4.99 | 198,465 |
| Independence from Whom | 0 | - | 4.99 | 211,723 |
| Subdivisions by Country | 0 | - | 4.86 | 50,363 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,988 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,261 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,060 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,916 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,485 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,227 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,938 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,044 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,350 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,796 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,095 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,418 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,764 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,687 |
| World Map Quiz | 0 | - | 4.81 | 64,873 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,427 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,198 |
| Countries by Founding Story | 0 | - | 4.95 | 77,225 |
| Countries by Road Signs | 0 | - | 4.98 | 53,837 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,787 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,097 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,832 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,784 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,727 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,863 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,162 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,354 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,441 |
| Widest Countries East to West | 0 | - | 4.92 | 129,507 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,416 |
