| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,533 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,328 |
| Boundary Waters | 0 | - | 4.92 | 88,026 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,798 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,245 |
| Countries with Glaciers | 0 | - | 4.97 | 104,638 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,609 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,221 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,898,430 |
| Landlocked Countries | 0 | - | 4.99 | 413,355 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,623 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,145 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,566 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,916 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,775 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,471 |
| Himalayan Countries | 0 | - | 4.95 | 135,255 |
| Andean Countries | 0 | - | 4.94 | 82,774 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,185 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,130 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,851 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,559 |
| Danube Countries | 0 | - | 4.97 | 71,059 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,719 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,512 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,412 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,336 |
| European Landlocked Countries | 0 | - | 4.99 | 145,723 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,160 |
| Countries with the Most Species | 0 | - | 4.99 | 95,229 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,301 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,358 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,946 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,554 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,924 |
| Countries in the Alps | 0 | - | 4.86 | 116,777 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,304 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,530 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,203 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,989 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,397 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,122 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,975 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,540 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,730 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,149 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,029 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,186 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,027 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,424 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,848 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,716 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,729 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,009 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,617 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,741 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,134 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,555 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,579 |
| Largest Countries By Category | 0 | - | 4.97 | 156,711 |
| Countries by Countries | 0 | - | 4.96 | 62,234 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,337 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,955 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,729 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,301 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,681 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,475 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,531 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,224 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,341 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,606 |
| Longest International Borders | 0 | - | 4.99 | 263,502 |
| Countries with Three Borders | 0 | - | 4.96 | 36,169 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,589 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,646 |
| Demonym of Every Country | 0 | - | 4.91 | 58,618 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,207 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,546 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,460 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,034 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,675 |
| Island Countries | 0 | - | 4.99 | 707,515 |
| Least-Forested Countries | 0 | - | 4.53 | 64,889 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,698 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,131 |
| Northernmost Countries | 0 | - | 4.99 | 357,578 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,453 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,074 |
| Countries of South America | 0 | - | 5.00 | 914,260 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,889 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,382 |
| "Land" Countries | 0 | - | 4.98 | 333,571 |
| Top World Languages | 0 | - | 4.92 | 812,792 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,063 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,156 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,459 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,030 |
| Countries with Megacities | 0 | - | 4.99 | 246,592 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,955 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,824 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,395 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,767 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,710 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,898 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,622 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,578 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,568 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,374 |
| Countries by Capital City | 0 | - | 5.00 | 66,576 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,299 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,877 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,396 |
| Moved Capital Cities | 0 | - | 4.96 | 73,561 |
| Countries by Official Language | 0 | - | 4.95 | 192,715 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,048 |
| Countries in their Native Language | 0 | - | 4.99 | 196,578 |
| Independence from Whom | 0 | - | 4.99 | 209,618 |
| Subdivisions by Country | 0 | - | 4.86 | 50,054 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,697 |
| Megadiverse Countries | 0 | - | 4.97 | 133,870 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,750 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,906 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,409 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,621 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,982 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,874 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,125 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,205 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,511 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,401 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,477 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,487 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,649 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,008 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,582 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,512 |
| World Map Quiz | 0 | - | 4.81 | 63,465 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,520 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,298 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,284 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,953 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,911 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,659 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,826 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,033 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,244 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,927 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,316 |
| Widest Countries East to West | 0 | - | 4.92 | 128,582 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,212 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,176 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,555 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,672 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,604 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,017 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,047 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,570 |
| Countries with Double Letters | 0 | - | 4.97 | 93,332 |
| Countries that End in N | 0 | - | 4.94 | 156,437 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,620 |
| Countries with Six Letters | 0 | - | 4.93 | 210,296 |
| Countries with W | 0 | - | 4.97 | 158,188 |
| Countries with Z | 0 | - | 4.98 | 287,801 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,509 |
| Countries That End in U | 0 | - | 4.95 | 119,494 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,488 |
| Countries that End in O | 0 | - | 4.92 | 158,530 |
| Countries that End in R | 0 | - | 4.87 | 118,251 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,849 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,965 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,285 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,462 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,977 |
| Countries That End in Y | 0 | - | 4.90 | 185,184 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,321 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,637 |
| Countries that End in I | 0 | - | 4.94 | 134,386 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,133 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,176 |
| Countries That End in NIA | 0 | - | 4.92 | 108,978 |
| Countries That End in BIA | 0 | - | 4.92 | 147,682 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,029 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,455 |
| Countries That End in RIA | 0 | - | 4.93 | 126,060 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,978 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,127 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,492 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,872 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,330 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,915 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,091 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,619 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,471 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,805 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,094 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,777 |
