| Landlocked Countries | 0 | - | 4.99 | 420,492 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,456,813 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,694 |
| Himalayan Countries | 0 | - | 4.95 | 138,077 |
| Andean Countries | 0 | - | 4.95 | 84,261 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,483 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,313 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,114 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,557 |
| Danube Countries | 0 | - | 4.97 | 71,829 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,787 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,230 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,961 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,414 |
| European Landlocked Countries | 0 | - | 4.99 | 146,962 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,371 |
| Countries with the Most Species | 0 | - | 4.99 | 103,088 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,528 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,503 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,658 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,443 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,113 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,503 |
| Countries in the Alps | 0 | - | 4.87 | 117,955 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,375 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,696 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,547 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,449 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,305 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,831 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,466 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,336 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,074 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,701 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,564 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,418 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,067 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,363 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,530 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,177 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,687 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,822 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,153 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,658 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,104 |
| Largest Countries By Category | 0 | - | 4.97 | 157,925 |
| Countries by Countries | 0 | - | 4.97 | 63,008 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,460 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,215 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,502 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,387 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,819 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,681 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,952 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,822 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,049 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,525 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,343 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,425 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,098 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,241 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,593 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,569 |
| Pixelated World Map | 0 | - | 5.00 | 143,396 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,504 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,552 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,658 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,434 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,122 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,453 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,783 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,990 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,087 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,915 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,768 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,506 |
| World Coats of Arms | 0 | - | 4.99 | 64,523 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,475 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,953 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,466 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,260 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,032 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,205 |
| Island Countries | 0 | - | 4.99 | 710,368 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,438 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,131 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,743 |
| Every Country Shape | 0 | - | 5.00 | 465,405 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,833 |
| Northernmost Countries | 0 | - | 4.99 | 361,211 |
| Countries of South America | 0 | - | 5.00 | 925,046 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,985 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,807 |
| "Land" Countries | 0 | - | 4.98 | 336,341 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,589 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,964 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,455 |
| Countries with Megacities | 0 | - | 4.99 | 263,384 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,293 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,240 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,272 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,589 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,280 |
| Countries by Official Language | 0 | - | 4.95 | 194,929 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,944 |
| Countries in their Native Language | 0 | - | 4.99 | 198,453 |
| Independence from Whom | 0 | - | 4.99 | 211,710 |
| Subdivisions by Country | 0 | - | 4.86 | 50,360 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,981 |
| Megadiverse Countries | 0 | - | 4.96 | 134,880 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,793 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,257 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,200 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 138,245 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,059 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,909 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,478 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,215 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,936 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,041 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,339 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,794 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,093 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,869 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,416 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,663 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,877 |
| World Map Quiz | 0 | - | 4.81 | 64,859 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,196 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,929 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,529 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,165 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 36,824 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,473 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,517 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,159 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,318 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,661 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,188 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,883 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,781 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,093 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,828 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,770 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,717 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,851 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,094 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,352 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,432 |
| Widest Countries East to West | 0 | - | 4.92 | 129,501 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,161 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,061 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,639 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,411 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,703 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,310 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,397 |
| Countries that End in N | 0 | - | 4.95 | 170,433 |
| Countries with Five Letters | 0 | - | 4.96 | 281,374 |
| Countries with Six Letters | 0 | - | 4.94 | 212,842 |
| Countries with W | 0 | - | 4.97 | 159,730 |
| Countries with Z | 0 | - | 4.98 | 290,648 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,995 |
| Countries That End in U | 0 | - | 4.95 | 120,528 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,010 |
| Countries that End in O | 0 | - | 4.92 | 159,293 |
| Countries that End in R | 0 | - | 4.87 | 118,810 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,581 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,626 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,338 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,225 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,841 |
| Countries That End in Y | 0 | - | 4.91 | 185,731 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,542 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,624 |
| Countries that End in I | 0 | - | 4.94 | 134,961 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,740 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,672 |
| Countries That End in NIA | 0 | - | 4.92 | 109,633 |
| Countries That End in BIA | 0 | - | 4.93 | 148,987 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,884 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,213 |
| Countries That End in RIA | 0 | - | 4.93 | 126,653 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,781 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,118 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,429 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,814 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,348 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,422 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,806 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,362 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,305 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,289 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,731 |
