| Word Scramble - Countries | 0 | - | 4.86 | 2,092,217 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,902 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 116,774 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,590 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,578 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,597,883 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,069,804 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,521 |
| Countries with Four Letters | 0 | - | 4.99 | 419,643 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,326 |
| Landlocked Countries | 0 | - | 4.99 | 415,517 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,700 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,820 |
| Country Chain | 0 | - | 4.96 | 216,150 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,092 |
| Countries by Emojis | 0 | - | 4.99 | 237,364 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,321 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,961 |
| Islands by Country #1 | 0 | - | 4.87 | 174,688 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,078 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,417 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,431 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,732,090 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,544 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,692 |
| Name a Valid Country #1 | 0 | - | 4.99 | 285,352 |
| Name a Valid Country #2 | 0 | - | 4.98 | 247,622 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,892 |
| Name a Valid Country #5 | 0 | - | 4.99 | 196,975 |
| Name a Valid Country #6 | 0 | - | 4.94 | 127,299 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 714,172 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,358 |
| Himalayan Countries | 0 | - | 4.95 | 136,023 |
| Andean Countries | 0 | - | 4.94 | 83,190 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,514 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,665 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,205 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,849 |
| Danube Countries | 0 | - | 4.97 | 71,278 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,016 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,719 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,896 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,838 |
| European Landlocked Countries | 0 | - | 4.99 | 145,981 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,552 |
| Countries with the Most Species | 0 | - | 4.99 | 95,355 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,677 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,272 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,446 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,074 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,724 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,091 |
| Countries in the Alps | 0 | - | 4.86 | 117,146 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,771 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,622 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,167 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,603 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,401 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,154 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,820 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,907 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,705 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,216 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,280 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,147 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,630 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,891 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,908 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,491 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,803 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,352 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,054 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,342 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,241 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,740 |
| Largest Countries By Category | 0 | - | 4.97 | 157,055 |
| Countries by Countries | 0 | - | 4.96 | 62,459 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,694 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,031 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,384 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,959 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,943 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,863 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,867 |
| Island Countries | 0 | - | 4.99 | 708,386 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,916 |
| Northernmost Countries | 0 | - | 4.99 | 358,780 |
| Countries of South America | 0 | - | 5.00 | 918,076 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,516 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,853 |
| "Land" Countries | 0 | - | 4.98 | 334,131 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,732 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,607 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,570 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,454 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,014 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,525 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,029 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,819 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,233 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,402 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,862 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,837 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,723 |
| Random Countries by Borders | 0 | - | 4.99 | 81,845 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,703 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,948 |
| Countries with Megacities | 0 | - | 4.99 | 248,289 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,844 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,380 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,232 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,312 |
| Countries by Official Language | 0 | - | 4.95 | 193,220 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,773 |
| Countries in their Native Language | 0 | - | 4.99 | 197,047 |
| Independence from Whom | 0 | - | 4.99 | 210,193 |
| Subdivisions by Country | 0 | - | 4.86 | 50,153 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,088 |
| Megadiverse Countries | 0 | - | 4.96 | 134,470 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,221 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,024 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,552 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,911 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,896 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,138 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,360 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,463 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,308 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,788 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,960 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,528 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,632 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,595 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,803 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,129 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,181 |
| World Map Quiz | 0 | - | 4.81 | 63,831 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 135,761 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,763 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,605 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,808 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,541 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,265 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,382 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,132 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,327 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,522 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,089 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,542 |
| Widest Countries East to West | 0 | - | 4.92 | 129,042 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,290 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,511 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,660 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,876 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,851 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,245 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,781 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,647 |
| Countries with Double Letters | 0 | - | 4.96 | 93,723 |
| Countries that End in N | 0 | - | 4.94 | 157,166 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,072 |
| Countries with Six Letters | 0 | - | 4.93 | 210,740 |
| Countries with W | 0 | - | 4.97 | 158,439 |
| Countries with Z | 0 | - | 4.98 | 288,281 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,789 |
| Countries That End in U | 0 | - | 4.95 | 119,625 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,907 |
| Countries that End in O | 0 | - | 4.92 | 158,669 |
| Countries that End in R | 0 | - | 4.87 | 118,385 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,940 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,450 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,580 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,672 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,223 |
| Countries That End in Y | 0 | - | 4.90 | 185,300 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,644 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,931 |
| Countries that End in I | 0 | - | 4.94 | 134,556 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,510 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,316 |
| Countries That End in NIA | 0 | - | 4.92 | 109,140 |
| Countries That End in BIA | 0 | - | 4.92 | 147,871 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,283 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,654 |
| Countries That End in RIA | 0 | - | 4.93 | 126,212 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,199 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,782 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,706 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,057 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,613 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,042 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,300 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,818 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,711 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,910 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,373 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,018 |
| Countries that End in L | 0 | - | 4.94 | 156,173 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,249 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,024 |
