| Landlocked Countries | 0 | - | 4.99 | 425,760 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,873,053 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,210 |
| Himalayan Countries | 0 | - | 4.93 | 140,208 |
| Andean Countries | 0 | - | 4.94 | 85,424 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,575 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,967 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,142 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,416 |
| Danube Countries | 0 | - | 4.97 | 72,377 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,577 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,826 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,098 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,592 |
| European Landlocked Countries | 0 | - | 4.99 | 147,599 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,289 |
| Countries with the Most Species | 0 | - | 4.99 | 103,555 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,397 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,775 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,881 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,836 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,575 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,008 |
| Countries in the Alps | 0 | - | 4.87 | 118,764 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,612 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,842 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,957 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,018 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,941 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,244 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,388 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,856 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,415 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,167 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,862 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,738 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,551 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,778 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,884 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,819 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,603 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 69,098 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,658 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,674 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,120 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,498 |
| Largest Countries By Category | 0 | - | 4.97 | 158,853 |
| Countries by Countries | 0 | - | 4.96 | 63,638 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,251 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,399 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,100 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,803,973 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,852 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,177 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,253 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,333 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,320 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,884 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,184 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,598 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,309 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,638 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,385 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,330 |
| Pixelated World Map | 0 | - | 5.00 | 144,100 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,338 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,263 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,336 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,490 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 100,068 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,409 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,649 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,732 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,689 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 73,056 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,643 |
| World Coats of Arms | 0 | - | 4.99 | 65,134 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,790 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,229 |
| Country Flags With Blue Removed | 0 | - | 4.89 | 45,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,356 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,670 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,660 |
| Island Countries | 0 | - | 4.99 | 712,537 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,081 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,706 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,474 |
| Every Country Shape | 0 | - | 5.00 | 471,030 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,630 |
| Northernmost Countries | 0 | - | 4.99 | 363,950 |
| Countries of South America | 0 | - | 5.00 | 932,581 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,215 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,006 |
| "Land" Countries | 0 | - | 4.98 | 338,364 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,487 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,225 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,133 |
| Countries with Megacities | 0 | - | 4.99 | 267,073 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,825 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,123 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,975 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,141 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,230 |
| Countries by Official Language | 0 | - | 4.95 | 195,982 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,612 |
| Countries in their Native Language | 0 | - | 4.99 | 199,728 |
| Independence from Whom | 0 | - | 4.99 | 213,050 |
| Subdivisions by Country | 0 | - | 4.87 | 50,613 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,424 |
| Megadiverse Countries | 0 | - | 4.96 | 135,275 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,937 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,536 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,654 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,405 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,653 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,228 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,965 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,847 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,106 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,569 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,036 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,254 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,517 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,375 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,441 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,141 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,579 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,841 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,341 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,480 |
| World Map Quiz | 0 | - | 4.81 | 65,719 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,711 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,407 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,790 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 165,209 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 39,919 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 34,177 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 105,140 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 112,118 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,973 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,920 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,131 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,639 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,379 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,241 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,076 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,555 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,558 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,424 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,528 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,724 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,688 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,704 |
| Widest Countries East to West | 0 | - | 4.92 | 130,451 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,597 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,253 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,515 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,061 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,964 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,480 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,502 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,889 |
| Countries with Double Letters | 0 | - | 4.96 | 97,063 |
| Countries that End in N | 0 | - | 4.95 | 171,921 |
| Countries with Five Letters | 0 | - | 4.96 | 283,751 |
| Countries with Six Letters | 0 | - | 4.94 | 214,459 |
| Countries with W | 0 | - | 4.96 | 160,924 |
| Countries with Z | 0 | - | 4.98 | 292,436 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,281 |
| Countries That End in U | 0 | - | 4.95 | 121,186 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,097 |
| Countries that End in O | 0 | - | 4.92 | 160,211 |
| Countries that End in R | 0 | - | 4.87 | 119,182 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,936 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,822 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,150 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,826 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,752 |
| Countries That End in Y | 0 | - | 4.91 | 186,088 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,449 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,271 |
| Countries that End in I | 0 | - | 4.94 | 135,314 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,617 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,055 |
| Countries That End in NIA | 0 | - | 4.92 | 110,050 |
| Countries That End in BIA | 0 | - | 4.93 | 149,572 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,536 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,771 |
| Countries That End in RIA | 0 | - | 4.93 | 127,053 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,388 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,584 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,182 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,622 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,170 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,804 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,327 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,537 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,903 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,649 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,418 |
