| Countries of the World Quiz | 0 | - | 5.00 | 46,974,483 |
| Landlocked Countries | 0 | - | 4.99 | 414,300 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,407 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,865 |
| Himalayan Countries | 0 | - | 4.95 | 135,600 |
| Andean Countries | 0 | - | 4.94 | 82,951 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,317 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,360 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,020 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,691 |
| Danube Countries | 0 | - | 4.97 | 71,142 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,845 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,607 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,622 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,536 |
| European Landlocked Countries | 0 | - | 4.99 | 145,839 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,307 |
| Countries with the Most Species | 0 | - | 4.99 | 95,284 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,453 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,223 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,391 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,994 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,634 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,006 |
| Countries in the Alps | 0 | - | 4.86 | 116,934 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,641 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,386 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,071 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,479 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,253 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,064 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,597 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,664 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,820 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,534 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,120 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,218 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,084 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,507 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,803 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,501 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,020 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,474 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,159 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,595 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,132 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,797 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,507 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,205 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,713 |
| Flags that are Red & White Only | 0 | - | 4.97 | 162,454 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,853 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,291 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,563 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,866 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,647 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,897 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,649 |
| Largest Countries By Category | 0 | - | 4.97 | 156,869 |
| Countries by Countries | 0 | - | 4.96 | 62,327 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,769 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,782 |
| Pixelated World Map | 0 | - | 5.00 | 142,539 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,514 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,836 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,514 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,922 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,683 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,986 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,735 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,667 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,949 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,094 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,273 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,834 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,410 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,301 |
| World Coats of Arms | 0 | - | 4.99 | 63,942 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,549 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,079 |
| Every Country Shape | 0 | - | 5.00 | 459,570 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,094 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,665 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,864 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,826 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,370 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,188 |
| Island Countries | 0 | - | 4.99 | 707,875 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,373 |
| Northernmost Countries | 0 | - | 4.99 | 358,084 |
| Countries of South America | 0 | - | 5.00 | 915,961 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,006 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,691 |
| "Land" Countries | 0 | - | 4.98 | 333,829 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,513 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,503 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,161 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,229 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,163 |
| Countries by Partial Flag Images #7 | 0 | - | 4.90 | 30,953 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,669 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,430 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 162,782 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,646 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,426 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,743 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,350 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,381 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,095 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,638 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,118 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,738 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,605 |
| Countries with Megacities | 0 | - | 4.99 | 247,519 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,440 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,189 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,858 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,119 |
| Countries by Official Language | 0 | - | 4.95 | 192,917 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,332 |
| Countries in their Native Language | 0 | - | 4.99 | 196,772 |
| Independence from Whom | 0 | - | 4.99 | 209,868 |
| Subdivisions by Country | 0 | - | 4.86 | 50,101 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,885 |
| Megadiverse Countries | 0 | - | 4.97 | 133,960 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,938 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,951 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,464 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,875 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,746 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,046 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,168 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,212 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,244 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,759 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,725 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,453 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,543 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,534 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,728 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,055 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,776 |
| World Map Quiz | 0 | - | 4.81 | 63,633 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,402 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,510 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,295 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,041 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,958 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,951 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,137 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,357 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,987 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,394 |
| Widest Countries East to West | 0 | - | 4.92 | 128,747 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,236 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,314 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,600 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,744 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,695 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,118 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 70,981 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,607 |
| Countries with Double Letters | 0 | - | 4.96 | 93,515 |
| Countries that End in N | 0 | - | 4.94 | 156,999 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,819 |
| Countries with Six Letters | 0 | - | 4.93 | 210,497 |
| Countries with W | 0 | - | 4.97 | 158,314 |
| Countries with Z | 0 | - | 4.98 | 288,030 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,633 |
| Countries That End in U | 0 | - | 4.95 | 119,557 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,706 |
| Countries that End in O | 0 | - | 4.92 | 158,596 |
| Countries that End in R | 0 | - | 4.87 | 118,311 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,881 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,221 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,420 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,556 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,101 |
| Countries That End in Y | 0 | - | 4.90 | 185,239 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,481 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,780 |
| Countries that End in I | 0 | - | 4.94 | 134,477 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,306 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,240 |
| Countries That End in NIA | 0 | - | 4.92 | 109,058 |
| Countries That End in BIA | 0 | - | 4.92 | 147,768 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,148 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,555 |
| Countries That End in RIA | 0 | - | 4.93 | 126,131 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,083 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,379 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,577 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,950 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,440 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,963 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,188 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,712 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,575 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,846 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,887 |
