| World's Longest Rivers | 0 | - | 4.90 | 137,342 |
| Countries With No Rivers | 0 | - | 4.96 | 77,034 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,478 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,137 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,716 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,911 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,122 |
| North Sea Countries | 0 | - | 4.92 | 87,607 |
| Black Sea Countries | 0 | - | 4.87 | 60,700 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,510 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,616 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,334 |
| Seas on the World Map | 0 | - | 4.96 | 135,764 |
| Seas of the World | 0 | - | 5.00 | 157,871 |
| Famous Rivers | 0 | - | 4.75 | 105,165 |
| Most Populous River Basins | 0 | - | 4.55 | 39,779 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,426 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,977 |
| Countries with Fjords | 0 | - | 4.94 | 101,187 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,809 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,904 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,827 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,631 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,093 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,677 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,199 |
| Rivers by City | 0 | - | 4.38 | 31,759 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,169 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,067 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,909 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,223 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,829 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,565 |
| Biggest City by River | 0 | - | 4.38 | 52,925 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,766 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,844 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,672 |
| Megadiverse Countries | 0 | - | 4.96 | 135,157 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,354 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,047 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,586 |
| Geologic Time Scale | 0 | - | 4.41 | 10,055 |
| Rivers on Borders | 0 | - | 4.02 | 22,726 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,019 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,839 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,287 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,275 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,694 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,028 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,798 |
| Boundary Waters | 0 | - | 4.92 | 88,670 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,332 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,487 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,058 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,792 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,735,422 |
| Landlocked Countries | 0 | - | 4.99 | 423,851 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,030 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,349 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,821 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,221 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,712 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,734 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,277 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,396 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,114 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,590 |
| Island Countries | 0 | - | 4.99 | 711,780 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,365 |
| Himalayan Countries | 0 | - | 4.94 | 139,537 |
| Andean Countries | 0 | - | 4.94 | 85,065 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,247 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,462 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,808 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,119 |
| Danube Countries | 0 | - | 4.97 | 72,212 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,309 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,627 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,715 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,221 |
| European Landlocked Countries | 0 | - | 4.99 | 147,382 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,985 |
| Countries with the Most Species | 0 | - | 4.99 | 103,424 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,116 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,681 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,793 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,703 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,440 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,853 |
| Countries in the Alps | 0 | - | 4.87 | 118,497 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,087 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,462 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,814 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,816 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,750 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,924 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,675 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,301 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,019 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,762 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,632 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,391 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,723 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,384 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,253 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,365 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,932 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,664 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,382 |
| Largest Countries By Category | 0 | - | 4.97 | 158,551 |
| Countries by Countries | 0 | - | 4.96 | 63,443 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,016 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,350 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,624 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,293 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,211 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,909 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,495 |
| Northernmost Countries | 0 | - | 4.99 | 363,092 |
| Countries of South America | 0 | - | 5.00 | 930,001 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,316 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,477 |
| "Land" Countries | 0 | - | 4.98 | 337,892 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,189 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,265 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,930 |
| Top World Languages | 0 | - | 4.92 | 827,259 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,662 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,574 |
| Rivers A-Z | 0 | - | 4.35 | 32,835 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,570 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,445 |
| Longest International Borders | 0 | - | 4.99 | 265,531 |
| Countries with Three Borders | 0 | - | 4.96 | 36,692 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,249 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,372 |
| Demonym of Every Country | 0 | - | 4.90 | 61,157 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,646 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,783 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,451 |
| Countries with Megacities | 0 | - | 4.99 | 265,890 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,245 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,756 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,501 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,854 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,964 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,890 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,787 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,977 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,908 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,773 |
| Countries by Capital City | 0 | - | 5.00 | 69,055 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,631 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,039 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,622 |
| Moved Capital Cities | 0 | - | 4.96 | 74,518 |
| Countries by Official Language | 0 | - | 4.95 | 195,650 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,126 |
| Countries in their Native Language | 0 | - | 4.99 | 199,426 |
| Independence from Whom | 0 | - | 4.99 | 212,577 |
| Subdivisions by Country | 0 | - | 4.87 | 50,537 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,076 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,448 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,344 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,164 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,376 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,701 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,745 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,748 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,207 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,098 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,273 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,332 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,062 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,478 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,603 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,591 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,852 |
| World Map Quiz | 0 | - | 4.81 | 65,381 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,288 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,532 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,384 |
| Countries by Founding Story | 0 | - | 4.95 | 77,538 |
| Countries by Road Signs | 0 | - | 4.98 | 54,210 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,670 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,688 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,341 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,972 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,204 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,325 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,538 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,587 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,125 |
| Widest Countries East to West | 0 | - | 4.92 | 130,204 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,531 |
