| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,011 |
| North Sea Countries | 0 | - | 4.92 | 87,380 |
| Black Sea Countries | 0 | - | 4.87 | 60,596 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,374 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,471 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,222 |
| Seas on the World Map | 0 | - | 4.96 | 135,325 |
| Seas of the World | 0 | - | 5.00 | 156,829 |
| World's Longest Rivers | 0 | - | 4.89 | 136,672 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,776 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,446 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,796 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,498 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,452 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,814 |
| Countries with Fjords | 0 | - | 4.94 | 100,885 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,675 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,490 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,859 |
| Countries With No Rivers | 0 | - | 4.96 | 76,796 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,102 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,993 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,394 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,394 |
| Famous Rivers | 0 | - | 4.75 | 104,959 |
| City to River #1 | 0 | - | 4.59 | 35,847 |
| Most Populous River Basins | 0 | - | 4.55 | 39,713 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,773 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,348 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,409 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,237 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,233 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,623 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,693 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,720 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,955 |
| Megadiverse Countries | 0 | - | 4.96 | 134,869 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,246 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,003 |
| Rivers by City | 0 | - | 4.38 | 31,714 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,040 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,019 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,513 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,075 |
| Geologic Time Scale | 0 | - | 4.41 | 10,010 |
| Biggest City by River | 0 | - | 4.41 | 52,853 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,799 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,543 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,017 |
| Boundary Waters | 0 | - | 4.92 | 88,456 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,158 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,067 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,421 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,456 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,443,458 |
| Landlocked Countries | 0 | - | 4.99 | 420,275 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,586 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,811 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,930 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,155 |
| World Capitals Quiz | 0 | - | 5.00 | 5,072,473 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,620 |
| Himalayan Countries | 0 | - | 4.95 | 138,019 |
| Andean Countries | 0 | - | 4.95 | 84,221 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,438 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,233 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,090 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,527 |
| Danube Countries | 0 | - | 4.97 | 71,803 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,748 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,193 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,922 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,301 |
| European Landlocked Countries | 0 | - | 4.99 | 146,941 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,339 |
| Countries with the Most Species | 0 | - | 4.99 | 103,069 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,502 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,492 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,645 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,427 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,110 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,495 |
| Countries in the Alps | 0 | - | 4.87 | 117,932 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 98,909 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,660 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,533 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,427 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,275 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,822 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,448 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,318 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,062 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,682 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,554 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,410 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,052 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,331 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,344 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,487 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,158 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,669 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,781 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,066 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,616 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,087 |
| Largest Countries By Category | 0 | - | 4.97 | 157,887 |
| Countries by Countries | 0 | - | 4.97 | 62,989 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,436 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,208 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,004 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,785 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,483 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,345 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,548 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,791 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,341 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,437 |
| Rivers on Borders | 0 | - | 4.02 | 22,692 |
| Rivers A-Z | 0 | - | 4.35 | 32,778 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,538 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,169 |
| Longest International Borders | 0 | - | 4.99 | 264,911 |
| Countries with Three Borders | 0 | - | 4.96 | 36,522 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,007 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,117 |
| Demonym of Every Country | 0 | - | 4.91 | 59,881 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,114 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,003 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,990 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,126 |
| Island Countries | 0 | - | 4.99 | 710,305 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,167 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,645 |
| Northernmost Countries | 0 | - | 4.99 | 361,133 |
| Countries of South America | 0 | - | 5.00 | 924,825 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,699 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,317 |
| "Land" Countries | 0 | - | 4.98 | 336,137 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,429 |
| All Country Flags of the World | 0 | - | 5.00 | 3,662,733 |
| Top World Languages | 0 | - | 4.92 | 821,983 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,388 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,334 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,415 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,260 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,417 |
| Countries with Megacities | 0 | - | 4.99 | 263,184 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,248 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,220 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,544 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,250 |
| Biggest Cities in the World | 0 | - | 4.91 | 798,587 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,094 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,222 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,387 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,467 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,198 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,954 |
| Countries by Capital City | 0 | - | 5.00 | 68,232 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,148 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,627 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,343 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,174 |
| Moved Capital Cities | 0 | - | 4.96 | 74,192 |
| Countries by Official Language | 0 | - | 4.95 | 194,901 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,894 |
| Countries in their Native Language | 0 | - | 4.99 | 198,430 |
| Independence from Whom | 0 | - | 4.99 | 211,671 |
| Subdivisions by Country | 0 | - | 4.86 | 50,348 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,946 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,760 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,247 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,056 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,889 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,465 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,191 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,925 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,554 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,032 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,317 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,085 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,857 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,246 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,407 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,601 |
| World Map Quiz | 0 | - | 4.81 | 64,838 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,314 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,173 |
| Countries by Founding Story | 0 | - | 4.95 | 77,201 |
| Countries by Road Signs | 0 | - | 4.98 | 53,804 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,751 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,073 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,808 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,728 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,688 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,828 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,956 |
