| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,454 |
| Countries of South America | 0 | - | 5.00 | 925,444 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,515 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,754 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,745 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,865 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,574 |
| Five Most Elevated Countries by Continent | 0 | - | 4.98 | 112,964 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 121,433 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,481,670 |
| Landlocked Countries | 0 | - | 4.99 | 420,800 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,873 |
| Himalayan Countries | 0 | - | 4.95 | 138,202 |
| Andean Countries | 0 | - | 4.95 | 84,323 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,545 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,427 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,172 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,602 |
| Danube Countries | 0 | - | 4.97 | 71,863 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,835 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,265 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,032 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,492 |
| European Landlocked Countries | 0 | - | 4.99 | 147,004 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,412 |
| Countries with the Most Species | 0 | - | 4.99 | 103,125 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,568 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,521 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,458 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,134 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,527 |
| Countries in the Alps | 0 | - | 4.87 | 118,001 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,933 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,781 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,560 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,474 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,345 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,847 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,497 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,364 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,095 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,720 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,573 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,430 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,092 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,368 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,390 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,603 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,190 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,715 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,855 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,331 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,748 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,127 |
| Largest Countries By Category | 0 | - | 4.97 | 157,975 |
| Countries by Countries | 0 | - | 4.96 | 63,049 |
| Five Least Guessed Countries by Continent | 0 | - | 4.97 | 98,401 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,496 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,228 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,522 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,542 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,694 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,170 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,956 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,608 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,511 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,129 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,429 |
| Island Countries | 0 | - | 4.99 | 710,544 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,244 |
| Northernmost Countries | 0 | - | 4.99 | 361,364 |
| "Land" Countries | 0 | - | 4.98 | 336,826 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,187 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,458 |
| Five Most Guessed Countries by Continent | 0 | - | 4.97 | 172,744 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,244 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,560 |
| Countries with Megacities | 0 | - | 4.99 | 263,640 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,393 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,295 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,670 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,335 |
| Countries by Official Language | 0 | - | 4.95 | 194,994 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,022 |
| Countries in their Native Language | 0 | - | 4.99 | 198,501 |
| Independence from Whom | 0 | - | 4.99 | 211,775 |
| Subdivisions by Country | 0 | - | 4.86 | 50,377 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,093 |
| Megadiverse Countries | 0 | - | 4.96 | 134,905 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,846 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,277 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,857 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,067 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,950 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,500 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,264 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,954 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,581 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,047 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,402 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,803 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,116 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,890 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,261 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,426 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,790 |
| World Map Quiz | 0 | - | 4.81 | 64,909 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,549 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,218 |
| Countries by Founding Story | 0 | - | 4.95 | 77,245 |
| Countries by Road Signs | 0 | - | 4.98 | 53,857 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,835 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,125 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,851 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,848 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,755 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,890 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,193 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,369 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,466 |
| Widest Countries East to West | 0 | - | 4.92 | 129,533 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,420 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,213 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,073 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,658 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,439 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,725 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,325 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,771 |
| Countries with Double Letters | 0 | - | 4.97 | 95,773 |
| Countries that End in N | 0 | - | 4.95 | 170,723 |
| Countries with Five Letters | 0 | - | 4.96 | 281,786 |
| Countries with Six Letters | 0 | - | 4.94 | 213,141 |
| Countries with W | 0 | - | 4.97 | 160,024 |
| Countries with Z | 0 | - | 4.98 | 290,984 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,370 |
| Countries That End in U | 0 | - | 4.95 | 120,668 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,164 |
| Countries that End in O | 0 | - | 4.92 | 159,391 |
| Countries that End in R | 0 | - | 4.87 | 118,864 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,636 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,767 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,430 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,294 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,931 |
| Countries That End in Y | 0 | - | 4.91 | 185,785 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,618 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,678 |
| Countries that End in I | 0 | - | 4.94 | 134,997 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,804 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,717 |
| Countries That End in NIA | 0 | - | 4.92 | 109,661 |
| Countries That End in BIA | 0 | - | 4.93 | 149,045 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,930 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,264 |
| Countries That End in RIA | 0 | - | 4.93 | 126,696 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,838 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,223 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,482 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,879 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,435 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,472 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,869 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,392 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,366 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,325 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,092 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,796 |
| Countries that End in L | 0 | - | 4.94 | 156,707 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,991 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,224 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,930 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,853 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,900 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,491 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,453 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,842 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,384 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,913 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,746 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,031 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,653 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,779 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,158 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,444 |
| One Border Countries | 0 | - | 4.98 | 468,762 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,541 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,890 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,625,055 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,944 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,419 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,103 |
| Countries by National Anthem | 0 | - | 4.93 | 71,250 |
| NATO Countries | 0 | - | 4.98 | 280,582 |
| EU Countries Quiz | 0 | - | 4.99 | 274,450 |
| Recently Independent Countries | 0 | - | 4.98 | 159,282 |
| French-Speaking Countries | 0 | - | 4.85 | 270,578 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,844 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,125 |
