| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,638,432 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 732,742 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,165 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,668,705 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,107,621 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,048 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,818 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,304 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,013 |
| Countries with Four Letters | 0 | - | 4.99 | 423,933 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,235 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 241,243 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,120 |
| Landlocked Countries | 0 | - | 4.99 | 423,065 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 979,859 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,344 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,695 |
| Country Chain | 0 | - | 4.96 | 217,818 |
| Countries by Emojis | 0 | - | 4.99 | 240,772 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,235 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,261 |
| Islands by Country #1 | 0 | - | 4.90 | 175,686 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,859 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,220 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,967 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,316 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,975 |
| Name a Valid Country #1 | 0 | - | 4.99 | 292,000 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,866 |
| Name a Valid Country #4 | 0 | - | 4.97 | 257,011 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,981 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,198 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,479 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,043 |
| Himalayan Countries | 0 | - | 4.95 | 139,198 |
| Andean Countries | 0 | - | 4.93 | 84,885 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,101 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,240 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,681 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,996 |
| Danube Countries | 0 | - | 4.97 | 72,140 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,199 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,547 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,541 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,052 |
| European Landlocked Countries | 0 | - | 4.99 | 147,284 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,843 |
| Countries with the Most Species | 0 | - | 4.99 | 103,352 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,970 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,648 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,768 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,622 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,371 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,792 |
| Countries in the Alps | 0 | - | 4.87 | 118,371 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,780 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,299 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,760 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,723 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,645 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,044 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,820 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,611 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,251 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,958 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,723 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,595 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,331 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,569 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,640 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,171 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,405 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,791 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,256 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,526 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,438 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,315 |
| Largest Countries By Category | 0 | - | 4.97 | 158,410 |
| Countries by Countries | 0 | - | 4.96 | 63,363 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,855 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,328 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,795 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,567 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,861 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,024 |
| Island Countries | 0 | - | 4.99 | 711,440 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,245 |
| Northernmost Countries | 0 | - | 4.99 | 362,513 |
| Countries of South America | 0 | - | 5.00 | 928,875 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,804 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,725 |
| "Land" Countries | 0 | - | 4.98 | 337,643 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,134 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,331 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,450 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,381 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,921 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,687 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,392 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,059 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,410 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,060 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,123 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,897 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,323 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,328 |
| European Countries with One Border | 0 | - | 4.97 | 183,300 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,080 |
| Random Countries by Borders | 0 | - | 4.99 | 82,771 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,641 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,217 |
| Countries with Megacities | 0 | - | 4.99 | 265,344 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,044 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,646 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,289 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,720 |
| Countries by Official Language | 0 | - | 4.95 | 195,480 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,686 |
| Countries in their Native Language | 0 | - | 4.99 | 199,253 |
| Independence from Whom | 0 | - | 4.99 | 212,344 |
| Subdivisions by Country | 0 | - | 4.87 | 50,485 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,919 |
| Megadiverse Countries | 0 | - | 4.96 | 135,099 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,287 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,419 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,297 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,142 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,276 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,664 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,621 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,418 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,710 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,184 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,918 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,954 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,271 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,015 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,428 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,551 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,555 |
| World Map Quiz | 0 | - | 4.81 | 65,260 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,967 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,852 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,459 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,319 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,416 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,122 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,591 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,017 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,129 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,401 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,497 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,653 |
| Widest Countries East to West | 0 | - | 4.92 | 129,757 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,481 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,517 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,386 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,845 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,704 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,978 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,415 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,490 |
| Countries that End in N | 0 | - | 4.95 | 171,380 |
| Countries with Five Letters | 0 | - | 4.96 | 282,936 |
| Countries with Six Letters | 0 | - | 4.94 | 213,820 |
| Countries with W | 0 | - | 4.96 | 160,516 |
| Countries with Z | 0 | - | 4.98 | 291,740 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,869 |
| Countries That End in U | 0 | - | 4.95 | 120,945 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,642 |
| Countries that End in O | 0 | - | 4.92 | 159,599 |
| Countries that End in R | 0 | - | 4.87 | 119,028 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,792 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,327 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,824 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,583 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,495 |
| Countries That End in Y | 0 | - | 4.91 | 185,946 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,066 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,991 |
| Countries that End in I | 0 | - | 4.94 | 135,172 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,884 |
| Countries That End in NIA | 0 | - | 4.92 | 109,859 |
| Countries That End in BIA | 0 | - | 4.93 | 149,309 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,221 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,528 |
| Countries That End in RIA | 0 | - | 4.93 | 126,884 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,127 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,902 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,853 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,282 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,833 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,640 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,118 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,470 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,633 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,494 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,109 |
