| World's Longest Rivers | 0 | - | 4.89 | 136,014 |
| Countries With No Rivers | 0 | - | 4.96 | 76,695 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,968 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,619 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,251 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,254 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,977 |
| North Sea Countries | 0 | - | 4.92 | 87,303 |
| Black Sea Countries | 0 | - | 4.87 | 60,573 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,311 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,408 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,177 |
| Seas on the World Map | 0 | - | 4.96 | 135,123 |
| Seas of the World | 0 | - | 5.00 | 156,342 |
| Famous Rivers | 0 | - | 4.75 | 104,875 |
| City to River #1 | 0 | - | 4.59 | 35,830 |
| Most Populous River Basins | 0 | - | 4.55 | 39,677 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,310 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,754 |
| Countries with Fjords | 0 | - | 4.94 | 100,770 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,348 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,620 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,599 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,408 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,894 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,332 |
| Biggest City by River | 0 | - | 4.41 | 52,824 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,033 |
| Rivers by City | 0 | - | 4.38 | 31,701 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,994 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,006 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,338 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,730 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,318 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,333 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,376 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,661 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,491 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,197 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,989 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,483 |
| Geologic Time Scale | 0 | - | 4.46 | 10,002 |
| Rivers on Borders | 0 | - | 4.02 | 22,685 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,693 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,788 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,210 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,205 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,583 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,006 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,597 |
| Boundary Waters | 0 | - | 4.92 | 88,371 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,074 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,896 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,151 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,322 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,323,644 |
| Landlocked Countries | 0 | - | 4.99 | 418,773 |
| World Capitals Quiz | 0 | - | 5.00 | 5,062,875 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,831 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,492 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,602 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,646 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,875 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,823 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,605 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,557 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,008 |
| Island Countries | 0 | - | 4.99 | 709,674 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,930 |
| Himalayan Countries | 0 | - | 4.94 | 137,357 |
| Andean Countries | 0 | - | 4.95 | 83,903 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,195 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,608 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,807 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,327 |
| Danube Countries | 0 | - | 4.97 | 71,636 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,522 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,037 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,609 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,693 |
| European Landlocked Countries | 0 | - | 4.99 | 146,752 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,105 |
| Countries with the Most Species | 0 | - | 4.99 | 102,891 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,241 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,428 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,581 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,291 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,971 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,348 |
| Countries in the Alps | 0 | - | 4.87 | 117,656 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,113 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,333 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,397 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,963 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,070 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,435 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,258 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,172 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,956 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,538 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,468 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,332 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,908 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,177 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,198 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,144 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,052 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,562 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,501 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,294 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,188 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,986 |
| Largest Countries By Category | 0 | - | 4.97 | 157,611 |
| Countries by Countries | 0 | - | 4.96 | 62,824 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,181 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,154 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,456 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,629 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,307 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,875 |
| Northernmost Countries | 0 | - | 4.99 | 360,391 |
| Countries of South America | 0 | - | 5.00 | 922,689 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,760 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,882 |
| "Land" Countries | 0 | - | 4.98 | 335,760 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,491 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,357 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,727 |
| Top World Languages | 0 | - | 4.92 | 820,049 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,210 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,387 |
| Rivers A-Z | 0 | - | 4.35 | 32,764 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,038 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,062 |
| Longest International Borders | 0 | - | 4.99 | 264,635 |
| Countries with Three Borders | 0 | - | 4.96 | 36,446 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,904 |
| Largest Cities for each Latitude Degree | 0 | - | 5.00 | 47,997 |
| Demonym of Every Country | 0 | - | 4.91 | 59,136 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,340 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,145 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,972 |
| Countries with Megacities | 0 | - | 4.99 | 258,686 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,843 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,961 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,128 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,967 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,836 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,940 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,230 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,259 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,953 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,605 |
| Countries by Capital City | 0 | - | 5.00 | 67,905 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,963 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,456 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,954 |
| Moved Capital Cities | 0 | - | 4.96 | 74,050 |
| Countries by Official Language | 0 | - | 4.95 | 194,609 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,488 |
| Countries in their Native Language | 0 | - | 4.99 | 198,154 |
| Independence from Whom | 0 | - | 4.99 | 211,267 |
| Subdivisions by Country | 0 | - | 4.86 | 50,278 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,672 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,527 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,177 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,740 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,010 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,690 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,367 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,949 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,831 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,471 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,983 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,915 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,702 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,982 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,762 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,140 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,315 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,363 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,146 |
| World Map Quiz | 0 | - | 4.81 | 64,497 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,533 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,016 |
| Countries by Founding Story | 0 | - | 4.95 | 77,047 |
| Countries by Road Signs | 0 | - | 4.98 | 53,641 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,470 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,909 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,624 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,291 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,502 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,660 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,813 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,253 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,271 |
| Widest Countries East to West | 0 | - | 4.92 | 129,350 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,378 |
