| World's Longest Rivers | 0 | - | 4.90 | 136,764 |
| Countries With No Rivers | 0 | - | 4.96 | 76,830 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,149 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,819 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,470 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,494 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,125 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,030 |
| North Sea Countries | 0 | - | 4.92 | 87,405 |
| Black Sea Countries | 0 | - | 4.87 | 60,612 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,391 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,493 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,238 |
| Seas on the World Map | 0 | - | 4.96 | 135,373 |
| Seas of the World | 0 | - | 5.00 | 157,000 |
| Famous Rivers | 0 | - | 4.75 | 104,978 |
| City to River #1 | 0 | - | 4.59 | 35,850 |
| Most Populous River Basins | 0 | - | 4.55 | 39,719 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,354 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,844 |
| Countries with Fjords | 0 | - | 4.94 | 100,913 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,540 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,716 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,694 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,502 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,977 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,482 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,088 |
| Rivers by City | 0 | - | 4.38 | 31,721 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,065 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,923 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,905 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,648 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,408 |
| Biggest City by River | 0 | - | 4.38 | 52,861 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,734 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,562 |
| Megadiverse Countries | 0 | - | 4.96 | 134,904 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,260 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,008 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,522 |
| Geologic Time Scale | 0 | - | 4.41 | 10,016 |
| Rivers on Borders | 0 | - | 4.02 | 22,697 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,823 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,802 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,243 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,236 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,631 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,020 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,675 |
| Boundary Waters | 0 | - | 4.92 | 88,483 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,180 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,123 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,491 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,484 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,480,267 |
| Landlocked Countries | 0 | - | 4.99 | 420,788 |
| World Capitals Quiz | 0 | - | 5.00 | 5,075,582 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,325 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,622 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,862 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,206 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,219 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,497 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,587,042 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,125 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,417 |
| Island Countries | 0 | - | 4.99 | 710,533 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,855 |
| Himalayan Countries | 0 | - | 4.95 | 138,193 |
| Andean Countries | 0 | - | 4.95 | 84,316 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,541 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,423 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,168 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,597 |
| Danube Countries | 0 | - | 4.97 | 71,860 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,833 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,264 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,027 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,486 |
| European Landlocked Countries | 0 | - | 4.99 | 147,001 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,410 |
| Countries with the Most Species | 0 | - | 4.99 | 103,123 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,567 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,521 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,457 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,132 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,525 |
| Countries in the Alps | 0 | - | 4.87 | 117,993 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,882 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,778 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,557 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,472 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,343 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,847 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,495 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,364 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,093 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,720 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,573 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,428 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,090 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,365 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,388 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,597 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,189 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,713 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,854 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,318 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,743 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,127 |
| Largest Countries By Category | 0 | - | 4.97 | 157,973 |
| Countries by Countries | 0 | - | 4.96 | 63,048 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,493 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,227 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,522 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,152 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,833 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,537 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,222 |
| Northernmost Countries | 0 | - | 4.99 | 361,360 |
| Countries of South America | 0 | - | 5.00 | 925,415 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,446 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,695 |
| "Land" Countries | 0 | - | 4.98 | 336,814 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,770 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,586 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,805 |
| Top World Languages | 0 | - | 4.92 | 822,572 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,379 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,450 |
| Rivers A-Z | 0 | - | 4.35 | 32,786 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,648 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,208 |
| Longest International Borders | 0 | - | 4.99 | 264,974 |
| Countries with Three Borders | 0 | - | 4.96 | 36,542 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,029 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,141 |
| Demonym of Every Country | 0 | - | 4.91 | 60,301 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,403 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,388 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,554 |
| Countries with Megacities | 0 | - | 4.99 | 263,629 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,389 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,295 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,666 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,332 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,188 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,284 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,434 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,532 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,269 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,049 |
| Countries by Capital City | 0 | - | 5.00 | 68,330 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,192 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,670 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,231 |
| Moved Capital Cities | 0 | - | 4.96 | 74,224 |
| Countries by Official Language | 0 | - | 4.95 | 194,990 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,018 |
| Countries in their Native Language | 0 | - | 4.99 | 198,496 |
| Independence from Whom | 0 | - | 4.99 | 211,771 |
| Subdivisions by Country | 0 | - | 4.86 | 50,376 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,050 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,839 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,275 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,857 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,066 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,947 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,498 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,256 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,952 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,579 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,047 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,398 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,802 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,115 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,886 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,261 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,426 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,423 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,779 |
| World Map Quiz | 0 | - | 4.81 | 64,905 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,540 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,215 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,978 |
| Countries by Founding Story | 0 | - | 4.95 | 77,243 |
| Countries by Road Signs | 0 | - | 4.98 | 53,855 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,833 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,122 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,850 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,845 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,755 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,888 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,192 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,367 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,463 |
| Widest Countries East to West | 0 | - | 4.92 | 129,529 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,420 |
