| Countries With No Rivers | 0 | - | 4.96 | 77,035 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,978 |
| Countries with Fjords | 0 | - | 4.94 | 101,190 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,764 |
| 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 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,324 |
| Megadiverse Countries | 0 | - | 4.96 | 135,157 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,809 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,905 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,116 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,413 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 87,423 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,538 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,735,827 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,893 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,587 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,511 |
| Landlocked Countries | 0 | - | 4.99 | 423,854 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,376 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,352 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,454 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,353 |
| Countries that Start with D | 0 | - | 4.96 | 714,189 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,447 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,742 |
| Countries that Start with H | 0 | - | 4.96 | 607,973 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,517 |
| Countries that Start with J | 0 | - | 4.98 | 605,460 |
| Countries that Start with K | 0 | - | 4.97 | 819,133 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,770 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,817 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,103 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,437 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,348 |
| Countries that Start with U | 0 | - | 4.97 | 907,260 |
| Countries that Start with V | 0 | - | 4.98 | 611,106 |
| Countries that Start with F | 0 | - | 4.83 | 620,072 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,112 |
| Rivers of the United States | 0 | - | 4.93 | 66,525 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,798 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,180 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,488 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,814 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,767 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,976 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,430 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,281 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,116 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,592 |
| Island Countries | 0 | - | 4.99 | 711,780 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,367 |
| Himalayan Countries | 0 | - | 4.94 | 139,540 |
| Andean Countries | 0 | - | 4.94 | 85,068 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,248 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,465 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,811 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,122 |
| Danube Countries | 0 | - | 4.97 | 72,215 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,312 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,628 |
| 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 | 147,383 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,985 |
| Countries with the Most Species | 0 | - | 4.99 | 103,425 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,116 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,682 |
| 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 | 107,463 |
| 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 | 58,302 |
| 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 | 77,724 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,385 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,255 |
| 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 | 244,934 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,666 |
| 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 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,600 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,909 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,500 |
| Northernmost Countries | 0 | - | 4.99 | 363,094 |
| Landforms by Country | 0 | - | 4.52 | 52,004 |
| Countries of South America | 0 | - | 5.00 | 930,005 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,329 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,484 |
| "Land" Countries | 0 | - | 4.98 | 337,894 |
| African Great Lakes | 0 | - | 4.82 | 66,761 |
| Capitals by River | 0 | - | 4.55 | 48,366 |
| Rivers A-Z | 0 | - | 4.35 | 32,835 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,398 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,302 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,731 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,452 |
| Countries with Megacities | 0 | - | 4.99 | 265,890 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,247 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,756 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,502 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,854 |
| Countries by Official Language | 0 | - | 4.95 | 195,650 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,127 |
| Countries in their Native Language | 0 | - | 4.99 | 199,427 |
| 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 | 132,449 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,345 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,164 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,377 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,701 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,746 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,096 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,748 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,999 |
| 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 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,532 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,674 |
| 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 | 202,975 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,204 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,327 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,539 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,587 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,134 |
| Widest Countries East to West | 0 | - | 4.92 | 130,206 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,531 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,028 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,439 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,933 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,812 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,096 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,448 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,691 |
| Countries that End in N | 0 | - | 4.95 | 171,571 |
| Countries with Five Letters | 0 | - | 4.96 | 283,226 |
| Countries with Six Letters | 0 | - | 4.94 | 214,032 |
| Countries with W | 0 | - | 4.96 | 160,646 |
| Countries with Z | 0 | - | 4.98 | 291,979 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,013 |
| Countries That End in U | 0 | - | 4.95 | 121,029 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,801 |
| Countries that End in O | 0 | - | 4.92 | 159,675 |
| Countries that End in R | 0 | - | 4.87 | 119,077 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,833 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,473 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,941 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,653 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,581 |
| Countries That End in Y | 0 | - | 4.91 | 186,001 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,196 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,081 |
| Countries that End in I | 0 | - | 4.94 | 135,218 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,385 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,938 |
| Countries That End in NIA | 0 | - | 4.92 | 109,928 |
| Countries That End in BIA | 0 | - | 4.93 | 149,407 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,340 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,632 |
| Countries That End in RIA | 0 | - | 4.93 | 126,943 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,222 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,115 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,962 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,401 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,942 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,695 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,194 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,550 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,211 |
