| Countries of the World Quiz | 0 | - | 5.00 | 47,532,480 |
| Countries by National Anthem | 0 | - | 4.93 | 71,268 |
| Landlocked Countries | 0 | - | 4.99 | 421,350 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,774,064 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,138 |
| Himalayan Countries | 0 | - | 4.95 | 138,443 |
| Andean Countries | 0 | - | 4.93 | 84,445 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,650 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,612 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,280 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,680 |
| Danube Countries | 0 | - | 4.97 | 71,935 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,924 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,350 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,165 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,628 |
| European Landlocked Countries | 0 | - | 4.99 | 147,062 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,513 |
| Countries with the Most Species | 0 | - | 4.99 | 103,168 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,668 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,547 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,691 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,495 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,176 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,591 |
| Countries in the Alps | 0 | - | 4.87 | 118,098 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,650 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,917 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,602 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,533 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,420 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,894 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,584 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,440 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,139 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,784 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,613 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,472 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,157 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,415 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,450 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,739 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,244 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 61,962 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,960 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,612 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,917 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,168 |
| Largest Countries By Category | 0 | - | 4.97 | 158,092 |
| Countries by Countries | 0 | - | 4.96 | 63,122 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,599 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,254 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,544 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,606 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,063 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,328 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,826 |
| Island Countries | 0 | - | 4.99 | 710,808 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,030 |
| Northernmost Countries | 0 | - | 4.99 | 361,673 |
| Countries of South America | 0 | - | 5.00 | 926,380 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,691 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,178 |
| "Land" Countries | 0 | - | 4.98 | 337,136 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,075 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,728 |
| Countries with Megacities | 0 | - | 4.99 | 264,163 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,575 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,386 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,838 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,448 |
| Countries by Official Language | 0 | - | 4.95 | 195,122 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,195 |
| Countries in their Native Language | 0 | - | 4.99 | 198,910 |
| Independence from Whom | 0 | - | 4.99 | 211,938 |
| Subdivisions by Country | 0 | - | 4.86 | 50,399 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,623 |
| Megadiverse Countries | 0 | - | 4.96 | 134,958 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,964 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,313 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,951 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,087 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,030 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,558 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,373 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,993 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,609 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,069 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,550 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,840 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,161 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,926 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,311 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,462 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,001 |
| World Map Quiz | 0 | - | 4.81 | 65,005 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,935 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,288 |
| Countries by Founding Story | 0 | - | 4.95 | 77,309 |
| Countries by Road Signs | 0 | - | 4.98 | 53,945 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,966 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,204 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,925 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,037 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,820 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,951 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,249 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,406 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,522 |
| Widest Countries East to West | 0 | - | 4.92 | 129,586 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,436 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,314 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,097 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,722 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,519 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,795 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,348 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,786 |
| Countries with Double Letters | 0 | - | 4.96 | 96,069 |
| Countries that End in N | 0 | - | 4.95 | 170,955 |
| Countries with Five Letters | 0 | - | 4.96 | 282,140 |
| Countries with Six Letters | 0 | - | 4.94 | 213,377 |
| Countries with W | 0 | - | 4.97 | 160,201 |
| Countries with Z | 0 | - | 4.98 | 291,256 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,557 |
| Countries That End in U | 0 | - | 4.95 | 120,772 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,328 |
| Countries that End in O | 0 | - | 4.92 | 159,461 |
| Countries that End in R | 0 | - | 4.87 | 118,924 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,684 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,936 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,601 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,403 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,320 |
| Countries That End in Y | 0 | - | 4.91 | 185,833 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,802 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,767 |
| Countries that End in I | 0 | - | 4.94 | 135,046 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,978 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,768 |
| Countries That End in NIA | 0 | - | 4.92 | 109,721 |
| Countries That End in BIA | 0 | - | 4.93 | 149,127 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,024 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,355 |
| Countries That End in RIA | 0 | - | 4.93 | 126,764 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,943 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,408 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,595 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,988 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,561 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,533 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,949 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,427 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,455 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,379 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,197 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,892 |
| Countries that End in L | 0 | - | 4.94 | 156,765 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,381 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,242 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,974 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,901 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,940 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,622 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,565 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,921 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,448 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,328 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,811 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,063 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,685 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,831 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,145 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,722 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,832,344 |
| One Border Countries | 0 | - | 4.98 | 469,488 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,827 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,830 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,040 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,027 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,496 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,649 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,163 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,082 |
| NATO Countries | 0 | - | 4.98 | 281,103 |
| EU Countries Quiz | 0 | - | 4.99 | 275,026 |
| Recently Independent Countries | 0 | - | 4.98 | 159,384 |
| French-Speaking Countries | 0 | - | 4.85 | 270,727 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,872 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,319 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,956 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,935 |
| German-Speaking Countries | 0 | - | 4.91 | 145,667 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,103,706 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,917 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,247 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,254 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,108 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,979 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,690 |
