| Countries of the World Quiz | 0 | - | 5.00 | 47,478,708 |
| Landlocked Countries | 0 | - | 4.99 | 420,773 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,174 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,845 |
| Himalayan Countries | 0 | - | 4.95 | 138,182 |
| Andean Countries | 0 | - | 4.95 | 84,311 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,536 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,417 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,167 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,597 |
| Danube Countries | 0 | - | 4.97 | 71,858 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,832 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,262 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,022 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,483 |
| European Landlocked Countries | 0 | - | 4.99 | 146,999 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,406 |
| Countries with the Most Species | 0 | - | 4.99 | 103,115 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,566 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,520 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,457 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,131 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,524 |
| Countries in the Alps | 0 | - | 4.87 | 117,991 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,849 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,774 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,557 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,470 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,341 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,845 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,493 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,363 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,091 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,717 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,573 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,428 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,087 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,364 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,387 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,596 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,188 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,710 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,849 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,309 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,734 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,127 |
| Largest Countries By Category | 0 | - | 4.97 | 157,970 |
| Countries by Countries | 0 | - | 4.96 | 63,045 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,492 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,227 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,521 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,534 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,485 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,117 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,404 |
| Island Countries | 0 | - | 4.99 | 710,522 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,200 |
| Northernmost Countries | 0 | - | 4.99 | 361,354 |
| Countries of South America | 0 | - | 5.00 | 925,382 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,414 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,636 |
| "Land" Countries | 0 | - | 4.98 | 336,793 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,371 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,548 |
| Countries with Megacities | 0 | - | 4.99 | 263,613 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,382 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,290 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,662 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,331 |
| Countries by Official Language | 0 | - | 4.95 | 194,987 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,013 |
| Countries in their Native Language | 0 | - | 4.99 | 198,493 |
| Independence from Whom | 0 | - | 4.99 | 211,768 |
| Subdivisions by Country | 0 | - | 4.86 | 50,375 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,023 |
| Megadiverse Countries | 0 | - | 4.96 | 134,903 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,830 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,275 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,856 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,065 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,947 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,496 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,253 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,952 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,576 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,046 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,394 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,801 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,113 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,886 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,260 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,426 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,771 |
| World Map Quiz | 0 | - | 4.81 | 64,902 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,534 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,215 |
| Countries by Founding Story | 0 | - | 4.95 | 77,242 |
| Countries by Road Signs | 0 | - | 4.98 | 53,853 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,830 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,120 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,849 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,842 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,754 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,888 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,190 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,366 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,462 |
| Widest Countries East to West | 0 | - | 4.92 | 129,529 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,420 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,209 |
| 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 | 94,652 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,436 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,722 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,321 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,770 |
| Countries with Double Letters | 0 | - | 4.97 | 95,731 |
| Countries that End in N | 0 | - | 4.95 | 170,698 |
| Countries with Five Letters | 0 | - | 4.96 | 281,747 |
| Countries with Six Letters | 0 | - | 4.94 | 213,110 |
| Countries with W | 0 | - | 4.97 | 159,994 |
| Countries with Z | 0 | - | 4.98 | 290,955 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,339 |
| Countries That End in U | 0 | - | 4.95 | 120,648 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,148 |
| Countries that End in O | 0 | - | 4.92 | 159,377 |
| Countries that End in R | 0 | - | 4.87 | 118,858 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,627 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,748 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,415 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,285 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,894 |
| Countries That End in Y | 0 | - | 4.91 | 185,776 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,602 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,667 |
| Countries that End in I | 0 | - | 4.94 | 134,991 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,792 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,711 |
| Countries That End in NIA | 0 | - | 4.92 | 109,653 |
| Countries That End in BIA | 0 | - | 4.93 | 149,032 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,921 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,260 |
| Countries That End in RIA | 0 | - | 4.93 | 126,690 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,834 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,213 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,476 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,864 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,424 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,465 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,864 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,389 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,355 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,320 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,085 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,790 |
| Countries that End in L | 0 | - | 4.94 | 156,703 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,973 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,218 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,929 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,852 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,897 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,483 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,444 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,835 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,374 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,876 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,740 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,029 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,651 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,778 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,104 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,430 |
| One Border Countries | 0 | - | 4.98 | 468,751 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,774 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,815 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,390 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,743 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,859 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,938 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,415 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,566 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,099 |
| Countries by National Anthem | 0 | - | 4.93 | 71,250 |
| NATO Countries | 0 | - | 4.98 | 280,571 |
| EU Countries Quiz | 0 | - | 4.99 | 274,433 |
| Recently Independent Countries | 0 | - | 4.98 | 159,275 |
| French-Speaking Countries | 0 | - | 4.85 | 270,569 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,844 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,118 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,499 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,384 |
| German-Speaking Countries | 0 | - | 4.91 | 145,596 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,843 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,187 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,843 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,640 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,456 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,712 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,953 |
