| Landlocked Countries | 0 | - | 4.99 | 420,469 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,455,169 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,688 |
| Himalayan Countries | 0 | - | 4.95 | 138,072 |
| Andean Countries | 0 | - | 4.95 | 84,254 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,477 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,310 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,111 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,554 |
| Danube Countries | 0 | - | 4.97 | 71,827 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,784 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,229 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,959 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,407 |
| European Landlocked Countries | 0 | - | 4.99 | 146,961 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,370 |
| Countries with the Most Species | 0 | - | 4.99 | 103,086 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,527 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,501 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,658 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,441 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,113 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,501 |
| Countries in the Alps | 0 | - | 4.87 | 117,954 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,329 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,693 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,545 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,447 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,300 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,831 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,465 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,336 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,072 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,700 |
| 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 | 104,066 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,346 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,361 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,525 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,177 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,686 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,820 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,147 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,656 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,104 |
| Largest Countries By Category | 0 | - | 4.97 | 157,921 |
| Countries by Countries | 0 | - | 4.97 | 63,007 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,459 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,213 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,501 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,286 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,812 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,680 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,947 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,818 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,044 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,519 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,338 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,421 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,092 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,236 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,590 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,569 |
| Pixelated World Map | 0 | - | 5.00 | 143,394 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,501 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,548 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,658 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,433 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,122 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,451 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,781 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,986 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,084 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,912 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,766 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,504 |
| World Coats of Arms | 0 | - | 4.99 | 64,520 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,474 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,953 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,465 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,243 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,029 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,199 |
| Island Countries | 0 | - | 4.99 | 710,363 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,432 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,122 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,737 |
| Every Country Shape | 0 | - | 5.00 | 465,393 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,806 |
| Northernmost Countries | 0 | - | 4.99 | 361,204 |
| Countries of South America | 0 | - | 5.00 | 924,996 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,939 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,761 |
| "Land" Countries | 0 | - | 4.98 | 336,312 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,533 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,963 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,452 |
| Countries with Megacities | 0 | - | 4.99 | 263,365 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,292 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,239 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,267 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,587 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,279 |
| Countries by Official Language | 0 | - | 4.95 | 194,927 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,939 |
| Countries in their Native Language | 0 | - | 4.99 | 198,450 |
| Independence from Whom | 0 | - | 4.99 | 211,705 |
| Subdivisions by Country | 0 | - | 4.86 | 50,360 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,980 |
| Megadiverse Countries | 0 | - | 4.96 | 134,880 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,787 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,255 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,199 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 138,242 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,844 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,059 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,905 |
| 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 | 153,934 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,563 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,040 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,334 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,794 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,092 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,866 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,414 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,655 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,873 |
| World Map Quiz | 0 | - | 4.81 | 64,858 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,194 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,926 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,520 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,161 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 36,817 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,471 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,511 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,157 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,317 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,660 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,186 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,882 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,775 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,087 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,827 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,765 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,711 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,847 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,070 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,350 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,432 |
| Widest Countries East to West | 0 | - | 4.92 | 129,499 |
| 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 | 148,406 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,700 |
| 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 | 95,390 |
| Countries that End in N | 0 | - | 4.95 | 170,430 |
| Countries with Five Letters | 0 | - | 4.96 | 281,367 |
| Countries with Six Letters | 0 | - | 4.94 | 212,838 |
| Countries with W | 0 | - | 4.97 | 159,728 |
| Countries with Z | 0 | - | 4.98 | 290,644 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,990 |
| Countries That End in U | 0 | - | 4.95 | 120,527 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,010 |
| Countries that End in O | 0 | - | 4.92 | 159,291 |
| Countries that End in R | 0 | - | 4.87 | 118,809 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,580 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,621 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,336 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,224 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,840 |
| Countries That End in Y | 0 | - | 4.91 | 185,729 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,542 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,622 |
| Countries that End in I | 0 | - | 4.94 | 134,960 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,738 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,672 |
| Countries That End in NIA | 0 | - | 4.92 | 109,632 |
| Countries That End in BIA | 0 | - | 4.93 | 148,986 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,884 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,211 |
| Countries That End in RIA | 0 | - | 4.93 | 126,652 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,781 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,110 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,425 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,812 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,346 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,420 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,802 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,361 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,302 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,288 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,725 |
