| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,266 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,076 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,579 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,343 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,934 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,836 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,964 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,214,041 |
| Landlocked Countries | 0 | - | 4.99 | 417,281 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,471 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,336 |
| Countries with Four Letters | 0 | - | 4.99 | 420,764 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,422 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,223 |
| Himalayan Countries | 0 | - | 4.95 | 136,767 |
| Andean Countries | 0 | - | 4.95 | 83,606 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,868 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,168 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,536 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,127 |
| Danube Countries | 0 | - | 4.97 | 71,488 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,307 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,904 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,303 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,301 |
| European Landlocked Countries | 0 | - | 4.99 | 146,197 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,879 |
| Countries with the Most Species | 0 | - | 4.99 | 102,401 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,010 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,357 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,536 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,160 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,205 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,435 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,857 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,235 |
| Countries in the Alps | 0 | - | 4.86 | 117,436 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,965 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,048 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,808 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,905 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,324 |
| Country Chain | 0 | - | 4.96 | 216,539 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,073 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,045 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,861 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,395 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,398 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,242 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,790 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,053 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,066 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,841 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,942 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,469 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,311 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,384 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,755 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,878 |
| Largest Countries By Category | 0 | - | 4.97 | 157,357 |
| Countries by Emojis | 0 | - | 4.99 | 238,046 |
| Countries by Countries | 0 | - | 4.96 | 62,674 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,517 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,039 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,960 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,423 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,149 |
| Islands by Country #1 | 0 | - | 4.87 | 174,903 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,220 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,575 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,541 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,350 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,469 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,951 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,502 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,386 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,329 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,476 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,519 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,572 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,115 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,236 |
| Island Countries | 0 | - | 4.99 | 709,102 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,170 |
| Northernmost Countries | 0 | - | 4.99 | 359,730 |
| Countries of South America | 0 | - | 5.00 | 920,553 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,159 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,979 |
| "Land" Countries | 0 | - | 4.98 | 335,213 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,995 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,768 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,792 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,534 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,171 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,078 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,285 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,966 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,951 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,046 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,387 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,246 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,478 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,883 |
| Random Countries by Borders | 0 | - | 4.99 | 82,094 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,300 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,497 |
| Countries with Megacities | 0 | - | 4.99 | 249,434 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,349 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,673 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,678 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,643 |
| Countries by Official Language | 0 | - | 4.95 | 194,248 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,072 |
| Countries in their Native Language | 0 | - | 4.99 | 197,846 |
| Independence from Whom | 0 | - | 4.99 | 210,977 |
| Subdivisions by Country | 0 | - | 4.86 | 50,224 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,451 |
| Megadiverse Countries | 0 | - | 4.96 | 134,605 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,013 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,663 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,965 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,276 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,707 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,599 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,409 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,822 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,476 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,621 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,717 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,251 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,754 |
| World Map Quiz | 0 | - | 4.81 | 64,232 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,725 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,775 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,189 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,742 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,478 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,892 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,352 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,524 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,688 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,184 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,155 |
| Widest Countries East to West | 0 | - | 4.92 | 129,225 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,741 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,947 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,999 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,046 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,422 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,160 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.97 | 94,612 |
| Countries that End in N | 0 | - | 4.95 | 168,724 |
| Countries with Five Letters | 0 | - | 4.96 | 273,661 |
| Countries with Six Letters | 0 | - | 4.94 | 211,885 |
| Countries with W | 0 | - | 4.97 | 159,175 |
| Countries with Z | 0 | - | 4.98 | 289,273 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,376 |
| Countries That End in U | 0 | - | 4.95 | 120,211 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,397 |
| Countries that End in O | 0 | - | 4.92 | 159,037 |
| Countries that End in R | 0 | - | 4.87 | 118,612 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,389 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,973 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,885 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,915 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,497 |
| Countries That End in Y | 0 | - | 4.90 | 185,523 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,976 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,197 |
| Countries that End in I | 0 | - | 4.94 | 134,733 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,805 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,367 |
| Countries That End in BIA | 0 | - | 4.93 | 148,657 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,517 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,869 |
| Countries That End in RIA | 0 | - | 4.93 | 126,400 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,446 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,252 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,974 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,295 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,925 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,206 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,527 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,052 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,932 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,091 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,628 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,326 |
| Countries that End in L | 0 | - | 4.94 | 156,378 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,253 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,107 |
