| Landlocked Countries | 0 | - | 4.99 | 413,701 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,926,661 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,625 |
| Himalayan Countries | 0 | - | 4.95 | 135,390 |
| Andean Countries | 0 | - | 4.94 | 82,837 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,229 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,227 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,918 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,620 |
| Danube Countries | 0 | - | 4.97 | 71,090 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,773 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,543 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,499 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,415 |
| European Landlocked Countries | 0 | - | 4.99 | 145,762 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,224 |
| Countries with the Most Species | 0 | - | 4.99 | 95,246 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,359 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,201 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,371 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,960 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,580 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,954 |
| Countries in the Alps | 0 | - | 4.86 | 116,835 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,579 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,272 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,016 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,428 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,178 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,010 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,587 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,762 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,323 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,067 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,198 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,046 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,457 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,753 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,758 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,088 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,653 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,776 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,335 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,696 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,607 |
| Largest Countries By Category | 0 | - | 4.97 | 156,773 |
| Countries by Countries | 0 | - | 4.96 | 62,263 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,396 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,775 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,595 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,381 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,971 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,451 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,773 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,240 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,927 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,386 |
| Flags that are Red & White Only | 0 | - | 4.97 | 161,392 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,668 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,243 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,635 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,653 |
| Pixelated World Map | 0 | - | 5.00 | 142,453 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,397 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,747 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,823 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,589 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,678 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,403 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,704 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,765 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,985 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,370 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,281 |
| World Coats of Arms | 0 | - | 4.99 | 63,871 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,045 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,627 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,798 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,102 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,143 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,887 |
| Island Countries | 0 | - | 4.99 | 707,661 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,396 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,273 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,888 |
| Every Country Shape | 0 | - | 5.00 | 459,038 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,558 |
| Northernmost Countries | 0 | - | 4.99 | 357,767 |
| Countries of South America | 0 | - | 5.00 | 914,893 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,629 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,645 |
| "Land" Countries | 0 | - | 4.98 | 333,677 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,528 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,598 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,709 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,288 |
| Countries with Megacities | 0 | - | 4.99 | 247,011 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,165 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,006 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,416 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,591 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,910 |
| Countries by Official Language | 0 | - | 4.95 | 192,788 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,154 |
| Countries in their Native Language | 0 | - | 4.99 | 196,652 |
| Independence from Whom | 0 | - | 4.99 | 209,714 |
| Subdivisions by Country | 0 | - | 4.86 | 50,070 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,772 |
| Megadiverse Countries | 0 | - | 4.97 | 133,907 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,813 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,921 |
| World Map without 12 Countries #2 | 0 | - | 4.97 | 171,364 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,044 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,431 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,863 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,673 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,008 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,035 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,159 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,217 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,748 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,583 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,427 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,501 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,508 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,684 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,032 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,610 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,051 |
| World Map Quiz | 0 | - | 4.81 | 63,502 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,339 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,500 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,299 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 162,356 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,474 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,353 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,674 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,288 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,314 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,045 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,576 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,053 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,368 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,998 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,960 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,791 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,861 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,068 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,282 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,951 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,339 |
| Widest Countries East to West | 0 | - | 4.92 | 128,611 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,225 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,695 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,639 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,049 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,586 |
| Countries with Double Letters | 0 | - | 4.97 | 93,400 |
| Countries that End in N | 0 | - | 4.94 | 156,891 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,700 |
| Countries with Six Letters | 0 | - | 4.93 | 210,376 |
| Countries with W | 0 | - | 4.97 | 158,237 |
| Countries with Z | 0 | - | 4.98 | 287,894 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,563 |
| Countries That End in U | 0 | - | 4.95 | 119,521 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,574 |
| Countries that End in O | 0 | - | 4.92 | 158,564 |
| Countries that End in R | 0 | - | 4.87 | 118,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,861 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,049 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,343 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,501 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,031 |
| Countries That End in Y | 0 | - | 4.90 | 185,210 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,389 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,696 |
| Countries that End in I | 0 | - | 4.94 | 134,419 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,206 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,198 |
| Countries That End in NIA | 0 | - | 4.92 | 109,012 |
| Countries That End in BIA | 0 | - | 4.92 | 147,721 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,071 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,491 |
| Countries That End in RIA | 0 | - | 4.93 | 126,087 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,013 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,209 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,531 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,891 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,364 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,932 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,130 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,652 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,516 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,816 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,820 |
