| City to Country Quiz #1 | 0 | - | 4.97 | 156,036 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,966 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,016 |
| Landlocked Countries | 0 | - | 4.99 | 422,277 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,606,589 |
| Historical City to Country | 0 | - | 4.84 | 78,650 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,670 |
| Himalayan Countries | 0 | - | 4.95 | 138,880 |
| Andean Countries | 0 | - | 4.93 | 84,700 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,898 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,950 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,526 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,867 |
| Danube Countries | 0 | - | 4.97 | 72,050 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,066 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,462 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,368 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,857 |
| European Landlocked Countries | 0 | - | 4.99 | 147,181 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,702 |
| Countries with the Most Species | 0 | - | 4.99 | 103,268 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,825 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,608 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,734 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,566 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,257 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,704 |
| Countries in the Alps | 0 | - | 4.87 | 118,260 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,300 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,087 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,686 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,629 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,553 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,972 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,710 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,529 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,201 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,886 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,671 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,546 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,251 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,505 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,560 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,973 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,339 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,166 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,133 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,097 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,209 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,258 |
| Largest Countries By Category | 0 | - | 4.97 | 158,268 |
| Countries by Countries | 0 | - | 4.96 | 63,265 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,733 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,302 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,575 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,701 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,837 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,805 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,598 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,530 |
| Island Countries | 0 | - | 4.99 | 711,154 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,238 |
| Northernmost Countries | 0 | - | 4.99 | 362,085 |
| Countries of South America | 0 | - | 5.00 | 927,770 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,527 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,280 |
| "Land" Countries | 0 | - | 4.98 | 337,424 |
| City to Country Quiz #4 | 0 | - | 4.56 | 84,222 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,120 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,561 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,424 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,975 |
| Countries with Megacities | 0 | - | 4.99 | 264,736 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,815 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,515 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,070 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,589 |
| Countries by Official Language | 0 | - | 4.95 | 195,312 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,464 |
| Countries in their Native Language | 0 | - | 4.99 | 199,101 |
| Independence from Whom | 0 | - | 4.99 | 212,170 |
| Subdivisions by Country | 0 | - | 4.86 | 50,440 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,787 |
| Megadiverse Countries | 0 | - | 4.96 | 135,041 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,149 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,377 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,252 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,119 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,172 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,613 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,516 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,051 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,675 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,159 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,727 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,906 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,224 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,985 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,370 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,511 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,274 |
| World Map Quiz | 0 | - | 4.81 | 65,140 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,441 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,379 |
| Countries by Founding Story | 0 | - | 4.95 | 77,401 |
| Countries by Road Signs | 0 | - | 4.98 | 54,045 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,145 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,312 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,024 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,285 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,923 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,037 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,323 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,458 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,593 |
| Widest Countries East to West | 0 | - | 4.92 | 129,675 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,464 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,417 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,132 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,787 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,623 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,896 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,382 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,805 |
| Countries with Double Letters | 0 | - | 4.96 | 96,289 |
| Countries that End in N | 0 | - | 4.95 | 171,178 |
| Countries with Five Letters | 0 | - | 4.96 | 282,588 |
| Countries with Six Letters | 0 | - | 4.94 | 213,612 |
| Countries with W | 0 | - | 4.97 | 160,364 |
| Countries with Z | 0 | - | 4.98 | 291,523 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,745 |
| Countries That End in U | 0 | - | 4.95 | 120,867 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,501 |
| Countries that End in O | 0 | - | 4.92 | 159,522 |
| Countries that End in R | 0 | - | 4.87 | 118,977 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,742 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,146 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,718 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,490 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,414 |
| Countries That End in Y | 0 | - | 4.91 | 185,886 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,957 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,882 |
| Countries that End in I | 0 | - | 4.94 | 135,110 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,140 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,830 |
| Countries That End in NIA | 0 | - | 4.92 | 109,800 |
| Countries That End in BIA | 0 | - | 4.93 | 149,231 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,136 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,446 |
| Countries That End in RIA | 0 | - | 4.93 | 126,819 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,036 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,681 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,736 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,161 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,717 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,587 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,046 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,450 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,539 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,431 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,314 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,002 |
| Countries that End in L | 0 | - | 4.94 | 156,854 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,886 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,273 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,794 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,686 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,075 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,725 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,488 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,886 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,112 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,713 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,890 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,667 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,079 |
| One Border Countries | 0 | - | 4.98 | 470,019 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,487 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,025 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,835,867 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,633,833 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,968 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,256 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,197 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,591 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,767 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,244 |
| Countries by National Anthem | 0 | - | 4.93 | 71,301 |
| NATO Countries | 0 | - | 4.98 | 281,654 |
| EU Countries Quiz | 0 | - | 4.99 | 275,680 |
| Recently Independent Countries | 0 | - | 4.98 | 159,503 |
| French-Speaking Countries | 0 | - | 4.85 | 270,927 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,907 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,622 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,437 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,603 |
| German-Speaking Countries | 0 | - | 4.91 | 145,768 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,986 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,306 |
