| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,595,689 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,531 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,753 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,613 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,518 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,230 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,498 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,037,940 |
| Landlocked Countries | 0 | - | 4.99 | 415,120 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,091,380 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,386 |
| Countries with Four Letters | 0 | - | 4.99 | 419,399 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,728,959 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,196 |
| Himalayan Countries | 0 | - | 4.95 | 135,894 |
| Andean Countries | 0 | - | 4.94 | 83,127 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,456 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,567 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,156 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,807 |
| Danube Countries | 0 | - | 4.97 | 71,244 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,967 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,683 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,817 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,740 |
| European Landlocked Countries | 0 | - | 4.99 | 145,944 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,481 |
| Countries with the Most Species | 0 | - | 4.99 | 95,326 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,610 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,258 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,435 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,624 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,049 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,727 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,702 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,060 |
| Countries in the Alps | 0 | - | 4.86 | 117,088 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,733 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,547 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,145 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,564 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,354 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,126 |
| Country Chain | 0 | - | 4.96 | 216,046 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,765 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,884 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,666 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,196 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,264 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,131 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,599 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,862 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,875 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,415 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,778 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,342 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,990 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,140 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,129 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,711 |
| Largest Countries By Category | 0 | - | 4.97 | 156,990 |
| Countries by Emojis | 0 | - | 4.99 | 237,197 |
| Countries by Countries | 0 | - | 4.96 | 62,419 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,275 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,729 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,627 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,014 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,375 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,918 |
| Islands by Country #1 | 0 | - | 4.87 | 174,636 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,036 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,386 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,414 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,394 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,789 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,301 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,709 |
| Name a Valid Country #2 | 0 | - | 4.98 | 247,033 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,396 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,307 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,829 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,633 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,679 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,645 |
| Island Countries | 0 | - | 4.99 | 708,237 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,436 |
| Northernmost Countries | 0 | - | 4.99 | 358,588 |
| Countries of South America | 0 | - | 5.00 | 917,452 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,607 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,509 |
| "Land" Countries | 0 | - | 4.98 | 334,044 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,673 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,570 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,481 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,435 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,977 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,370 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,970 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,786 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,076 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,262 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,741 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,749 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,676 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,703 |
| Random Countries by Borders | 0 | - | 4.99 | 81,811 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,599 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,846 |
| Countries with Megacities | 0 | - | 4.99 | 248,055 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,718 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,310 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,103 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,266 |
| Countries by Official Language | 0 | - | 4.95 | 193,114 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,617 |
| Countries in their Native Language | 0 | - | 4.99 | 196,960 |
| Independence from Whom | 0 | - | 4.99 | 210,091 |
| Subdivisions by Country | 0 | - | 4.86 | 50,134 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,028 |
| Megadiverse Countries | 0 | - | 4.97 | 134,246 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,120 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,002 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,526 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,900 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,856 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,109 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,297 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,396 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,285 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,780 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,872 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,502 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,606 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,575 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,781 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,112 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,053 |
| World Map Quiz | 0 | - | 4.81 | 63,754 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,519 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,551 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,736 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,490 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,212 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,246 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,086 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,292 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,478 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,061 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,509 |
| Widest Countries East to West | 0 | - | 4.92 | 129,008 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,281 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,456 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,640 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,848 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,798 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,209 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,425 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,636 |
| Countries with Double Letters | 0 | - | 4.96 | 93,655 |
| Countries that End in N | 0 | - | 4.94 | 157,117 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,993 |
| Countries with Six Letters | 0 | - | 4.93 | 210,652 |
| Countries with W | 0 | - | 4.97 | 158,407 |
| Countries with Z | 0 | - | 4.98 | 288,205 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,744 |
| Countries That End in U | 0 | - | 4.95 | 119,600 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,851 |
| Countries that End in O | 0 | - | 4.92 | 158,640 |
| Countries that End in R | 0 | - | 4.87 | 118,366 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,924 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,386 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,524 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,635 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,182 |
| Countries That End in Y | 0 | - | 4.90 | 185,279 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,597 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,881 |
| Countries that End in I | 0 | - | 4.94 | 134,529 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,441 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,287 |
| Countries That End in NIA | 0 | - | 4.92 | 109,109 |
| Countries That End in BIA | 0 | - | 4.92 | 147,844 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,236 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,624 |
| Countries That End in RIA | 0 | - | 4.93 | 126,190 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,166 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,670 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,657 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,015 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,562 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,016 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,273 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,782 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,669 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,885 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,327 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,976 |
| Countries that End in L | 0 | - | 4.94 | 156,146 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,042 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,019 |
