| City to Country Quiz #3 | 0 | - | 4.88 | 118,443 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,521 |
| Landlocked Countries | 0 | - | 4.99 | 415,216 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,044,803 |
| Historical City to Country | 0 | - | 4.84 | 78,229 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,237 |
| Himalayan Countries | 0 | - | 4.95 | 135,924 |
| Andean Countries | 0 | - | 4.94 | 83,144 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,465 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,591 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,168 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,815 |
| Danube Countries | 0 | - | 4.97 | 71,251 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,980 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,699 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,836 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,766 |
| European Landlocked Countries | 0 | - | 4.99 | 145,948 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,496 |
| Countries with the Most Species | 0 | - | 4.99 | 95,332 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,621 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,265 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,436 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,060 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,709 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,065 |
| Countries in the Alps | 0 | - | 4.86 | 117,105 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,738 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,567 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,150 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,570 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,366 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,131 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,778 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,886 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,674 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,199 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,268 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,135 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,603 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,870 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,882 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,428 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,789 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,348 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,008 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,188 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,155 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,716 |
| Largest Countries By Category | 0 | - | 4.97 | 157,001 |
| Countries by Countries | 0 | - | 4.96 | 62,427 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,638 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,019 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,376 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,922 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,729,562 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,694 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,729 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,693 |
| Island Countries | 0 | - | 4.99 | 708,265 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,528 |
| Northernmost Countries | 0 | - | 4.99 | 358,622 |
| Countries of South America | 0 | - | 5.00 | 917,574 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,872 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,805 |
| "Land" Countries | 0 | - | 4.98 | 334,068 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,182 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,971 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,828 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,333 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,631 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,864 |
| Countries with Megacities | 0 | - | 4.99 | 248,101 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,740 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,325 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,129 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,273 |
| Countries by Official Language | 0 | - | 4.95 | 193,139 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,650 |
| Countries in their Native Language | 0 | - | 4.99 | 196,975 |
| Independence from Whom | 0 | - | 4.99 | 210,111 |
| Subdivisions by Country | 0 | - | 4.86 | 50,138 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,035 |
| Megadiverse Countries | 0 | - | 4.97 | 134,332 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,134 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,004 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,531 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,901 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,861 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,113 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,312 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,416 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,292 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,783 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,893 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,508 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,611 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,576 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,789 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,117 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,083 |
| World Map Quiz | 0 | - | 4.81 | 63,769 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,568 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,565 |
| Countries by Founding Story | 0 | - | 4.95 | 76,702 |
| Countries by Road Signs | 0 | - | 4.98 | 53,263 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,755 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,502 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,225 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,265 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,096 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,297 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,485 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,070 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,517 |
| Widest Countries East to West | 0 | - | 4.92 | 129,013 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,281 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,470 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,644 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,859 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,813 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,216 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,529 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,639 |
| Countries with Double Letters | 0 | - | 4.96 | 93,663 |
| Countries that End in N | 0 | - | 4.94 | 157,128 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,015 |
| Countries with Six Letters | 0 | - | 4.93 | 210,673 |
| Countries with W | 0 | - | 4.97 | 158,414 |
| Countries with Z | 0 | - | 4.98 | 288,220 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,749 |
| Countries That End in U | 0 | - | 4.95 | 119,605 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,857 |
| Countries that End in O | 0 | - | 4.92 | 158,650 |
| Countries that End in R | 0 | - | 4.87 | 118,371 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,930 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,396 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,542 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,640 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,194 |
| Countries That End in Y | 0 | - | 4.90 | 185,282 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,606 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,889 |
| Countries that End in I | 0 | - | 4.94 | 134,539 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,454 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,295 |
| Countries That End in NIA | 0 | - | 4.92 | 109,114 |
| Countries That End in BIA | 0 | - | 4.92 | 147,846 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,246 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,631 |
| Countries That End in RIA | 0 | - | 4.93 | 126,194 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,176 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,693 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,676 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,026 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,576 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,022 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,279 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,793 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,674 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,891 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,336 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,982 |
| Countries that End in L | 0 | - | 4.94 | 156,149 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,091 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,019 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,946 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,616 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,643 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,641 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,013 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,915 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,809 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,242 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,463 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,414 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,691 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,316 |
| One Border Countries | 0 | - | 4.98 | 465,571 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,931 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,807,448 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,596,068 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,138 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,515 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,138 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,618 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,933 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,504 |
| Countries by National Anthem | 0 | - | 4.93 | 71,071 |
| NATO Countries | 0 | - | 4.98 | 277,174 |
| EU Countries Quiz | 0 | - | 4.99 | 270,863 |
| Recently Independent Countries | 0 | - | 4.98 | 158,189 |
| French-Speaking Countries | 0 | - | 4.85 | 269,259 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,444 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,515 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,691 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,399 |
| German-Speaking Countries | 0 | - | 4.89 | 123,600 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,875 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,515 |
