| Landlocked Countries | 0 | - | 4.99 | 412,863 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,850,118 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,225 |
| Himalayan Countries | 0 | - | 4.95 | 135,046 |
| Andean Countries | 0 | - | 4.94 | 82,659 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,080 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,982 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,753 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,461 |
| Danube Countries | 0 | - | 4.97 | 70,992 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,635 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,453 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,287 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,193 |
| European Landlocked Countries | 0 | - | 4.99 | 145,664 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,048 |
| Countries with the Most Species | 0 | - | 4.99 | 95,185 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,189 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,174 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,333 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,907 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,510 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,864 |
| Countries in the Alps | 0 | - | 4.87 | 116,680 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,467 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,077 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,938 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,319 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,064 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,934 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,469 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,683 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,452 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,966 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,164 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,995 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,362 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,670 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,672 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,857 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,567 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,199 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,664 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,823 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,358 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,537 |
| Largest Countries By Category | 0 | - | 4.97 | 156,609 |
| Countries by Countries | 0 | - | 4.96 | 62,164 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,209 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,932 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,651 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,709,634 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,219 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,893 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,393 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,330 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 113,856 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,442 |
| Flags that are Red & White Only | 0 | - | 4.97 | 147,912 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 144,240 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 73,161 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,395 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,381 |
| Pixelated World Map | 0 | - | 5.00 | 141,809 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,046 |
| Country Flags with the Most Blue | 0 | - | 4.87 | 91,527 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,603 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,419 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,111 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,583 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,259 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,559 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,597 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,822 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,313 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,252 |
| World Coats of Arms | 0 | - | 4.99 | 63,783 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 97,956 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,532 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,651 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,999 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,820 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,989 |
| Island Countries | 0 | - | 4.99 | 707,229 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,031 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,422 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,219 |
| Every Country Shape | 0 | - | 5.00 | 457,958 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,310 |
| Northernmost Countries | 0 | - | 4.99 | 357,234 |
| Countries of South America | 0 | - | 5.00 | 913,349 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,575 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,100 |
| "Land" Countries | 0 | - | 4.98 | 333,410 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,995 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,412 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,648 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,855 |
| Countries with Megacities | 0 | - | 4.99 | 246,168 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,776 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,731 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,254 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,239 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,665 |
| Countries by Official Language | 0 | - | 4.95 | 192,582 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,856 |
| Countries in their Native Language | 0 | - | 4.99 | 196,462 |
| Independence from Whom | 0 | - | 4.99 | 209,455 |
| Subdivisions by Country | 0 | - | 4.86 | 50,034 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,581 |
| Megadiverse Countries | 0 | - | 4.97 | 133,829 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,645 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,876 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,031 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 136,768 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,372 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,836 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,540 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,587 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,059 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,175 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,712 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,370 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,361 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,426 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,441 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,600 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,978 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,333 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,913 |
| World Map Quiz | 0 | - | 4.81 | 63,352 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,217 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 293,830 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 223,801 |
| Country Shapes Quiz #5 | 0 | - | 4.92 | 158,758 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,020 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,184 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,521 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,112 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,170 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 79,927 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,448 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 84,936 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,149 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,875 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,849 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,501 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,762 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,958 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,169 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,876 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,251 |
| Widest Countries East to West | 0 | - | 4.92 | 128,520 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,073 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,519 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,621 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,515 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,945 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,031 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,552 |
| Countries with Double Letters | 0 | - | 4.97 | 93,213 |
| Countries that End in N | 0 | - | 4.94 | 156,282 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,478 |
| Countries with Six Letters | 0 | - | 4.93 | 210,180 |
| Countries with W | 0 | - | 4.97 | 158,091 |
| Countries with Z | 0 | - | 4.98 | 287,348 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,426 |
| Countries That End in U | 0 | - | 4.95 | 119,444 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,328 |
| Countries that End in O | 0 | - | 4.92 | 158,473 |
| Countries that End in R | 0 | - | 4.86 | 118,201 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,807 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,855 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,180 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,377 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,565 |
| Countries That End in Y | 0 | - | 4.90 | 185,148 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,172 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,543 |
| Countries that End in I | 0 | - | 4.94 | 134,299 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,010 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,139 |
| Countries That End in NIA | 0 | - | 4.92 | 108,928 |
| Countries That End in BIA | 0 | - | 4.92 | 147,609 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,965 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,404 |
| Countries That End in RIA | 0 | - | 4.93 | 126,010 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,917 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,961 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,425 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,801 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,236 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,869 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,022 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,548 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,386 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,767 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,684 |
