| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.98 | 110,022 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,927 |
| Boundary Waters | 0 | - | 4.92 | 88,772 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,424 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,714 |
| Countries with Glaciers | 0 | - | 4.97 | 105,811 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,996 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,970 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,890,031 |
| Landlocked Countries | 0 | - | 4.99 | 426,028 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,217 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,933 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,009 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,024 |
| World Capitals Quiz | 0 | - | 5.00 | 5,107,002 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,351 |
| Himalayan Countries | 0 | - | 4.93 | 140,317 |
| Andean Countries | 0 | - | 4.94 | 85,503 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,648 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,056 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,228 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,461 |
| Danube Countries | 0 | - | 4.97 | 72,420 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,616 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,857 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,160 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,642 |
| European Landlocked Countries | 0 | - | 4.99 | 147,621 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,328 |
| Countries with the Most Species | 0 | - | 4.99 | 103,575 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,430 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,782 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,892 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,850 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,589 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,031 |
| Countries in the Alps | 0 | - | 4.87 | 118,799 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,537 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,675 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,898 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,973 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,037 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,976 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,276 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,425 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,879 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,437 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,193 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,889 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,753 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,572 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,560 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,814 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,905 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,889 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,630 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 73,848 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,701 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,783 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,192 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,520 |
| Largest Countries By Category | 0 | - | 4.97 | 158,886 |
| Countries by Countries | 0 | - | 4.96 | 63,660 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,282 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,405 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,117 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,805,314 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,465 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,988 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,808 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,619 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,132 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,580 |
| Longest International Borders | 0 | - | 4.99 | 265,832 |
| Countries with Three Borders | 0 | - | 4.96 | 36,779 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,361 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,500 |
| Demonym of Every Country | 0 | - | 4.90 | 61,495 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,395 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,554 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,599,839 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,729 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,772 |
| Island Countries | 0 | - | 4.99 | 712,620 |
| Least-Forested Countries | 0 | - | 4.53 | 65,421 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,343 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,921 |
| Northernmost Countries | 0 | - | 4.99 | 364,081 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,732 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,859 |
| Countries of South America | 0 | - | 5.00 | 932,883 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,600 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,753 |
| "Land" Countries | 0 | - | 4.98 | 338,425 |
| Top World Languages | 0 | - | 4.92 | 829,952 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,194 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,735 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,999 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,205 |
| Countries with Megacities | 0 | - | 4.99 | 267,199 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,884 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,157 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,203 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,268 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,326 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,375 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,981 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,219 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,248 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,170 |
| Countries by Capital City | 0 | - | 5.00 | 69,419 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,868 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,244 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,822 |
| Moved Capital Cities | 0 | - | 4.96 | 74,658 |
| Countries by Official Language | 0 | - | 4.95 | 196,026 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,670 |
| Countries in their Native Language | 0 | - | 4.99 | 199,757 |
| Independence from Whom | 0 | - | 4.99 | 213,108 |
| Subdivisions by Country | 0 | - | 4.87 | 50,621 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,467 |
| Megadiverse Countries | 0 | - | 4.96 | 135,289 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,966 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,546 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,700 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,232 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,281 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,861 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,130 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,573 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,074 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,262 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,563 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,385 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,449 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,155 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,590 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,880 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,109 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,402 |
| World Map Quiz | 0 | - | 4.81 | 65,759 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,349 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,724 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,291 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,105 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,578 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,621 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,455 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,554 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,755 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,705 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,750 |
| Widest Countries East to West | 0 | - | 4.92 | 130,517 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,602 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,275 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,524 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,071 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,993 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,499 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,507 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,896 |
| Countries with Double Letters | 0 | - | 4.96 | 97,113 |
| Countries that End in N | 0 | - | 4.95 | 171,987 |
| Countries with Five Letters | 0 | - | 4.96 | 283,861 |
| Countries with Six Letters | 0 | - | 4.94 | 214,518 |
| Countries with W | 0 | - | 4.96 | 160,975 |
| Countries with Z | 0 | - | 4.98 | 292,496 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,311 |
| Countries That End in U | 0 | - | 4.95 | 121,203 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,130 |
| Countries that End in O | 0 | - | 4.92 | 160,228 |
| Countries that End in R | 0 | - | 4.87 | 119,193 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,951 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,879 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,174 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,846 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,776 |
| Countries That End in Y | 0 | - | 4.91 | 186,097 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,485 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,293 |
| Countries that End in I | 0 | - | 4.94 | 135,326 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,650 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,065 |
| Countries That End in NIA | 0 | - | 4.92 | 110,073 |
| Countries That End in BIA | 0 | - | 4.93 | 149,590 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,560 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,786 |
| Countries That End in RIA | 0 | - | 4.93 | 127,070 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,407 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,618 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,201 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,641 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,197 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,815 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,340 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,542 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,923 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,659 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,744 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,439 |
