| Countries of the World Quiz | 0 | - | 5.00 | 47,968,741 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,387 |
| NATO Countries | 0 | - | 4.98 | 283,984 |
| EU Countries Quiz | 0 | - | 4.99 | 278,885 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,902 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,754 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,772 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 150,010 |
| Countries with NO Military | 0 | - | 4.97 | 63,604 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,189 |
| Landlocked Countries | 0 | - | 4.99 | 427,235 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,933 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,465 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,277 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,248 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,353 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,344 |
| Buddhist Countries | 0 | - | 4.96 | 145,252 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,318 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,973 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,367 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,908 |
| Himalayan Countries | 0 | - | 4.93 | 140,825 |
| Andean Countries | 0 | - | 4.94 | 85,799 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,915 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,486 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,466 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,688 |
| Danube Countries | 0 | - | 4.97 | 72,555 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,800 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,971 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,440 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,914 |
| European Landlocked Countries | 0 | - | 4.99 | 147,740 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,538 |
| Countries with the Most Species | 0 | - | 4.99 | 103,645 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,638 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,814 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,953 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,925 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,679 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,129 |
| Countries in the Alps | 0 | - | 4.87 | 118,973 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,989 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,131 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,171 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,127 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,390 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,594 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,991 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,513 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,314 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,954 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,674 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,924 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,019 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,148 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,733 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,439 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,842 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,306 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,491 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,615 |
| Largest Countries By Category | 0 | - | 4.97 | 159,094 |
| Countries by Countries | 0 | - | 4.97 | 63,807 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,229 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,606 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,037 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,353 |
| Island Countries | 0 | - | 4.99 | 713,010 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,151 |
| Northernmost Countries | 0 | - | 4.99 | 364,590 |
| Countries of South America | 0 | - | 5.00 | 934,278 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,507 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,988 |
| "Land" Countries | 0 | - | 4.98 | 338,994 |
| Countries that Start with A | 0 | - | 4.98 | 2,178,364 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,959 |
| Countries that Start with C | 0 | - | 4.96 | 1,833,408 |
| Countries that Start with D | 0 | - | 4.96 | 717,785 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,656 |
| Countries that Start with G | 0 | - | 4.97 | 1,513,215 |
| Countries that Start with H | 0 | - | 4.96 | 610,521 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,822 |
| Countries that Start with J | 0 | - | 4.98 | 607,903 |
| Countries that Start with K | 0 | - | 4.97 | 821,738 |
| Countries that Start with L | 0 | - | 4.98 | 1,098,072 |
| Countries that Start with N | 0 | - | 4.93 | 1,125,148 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,294 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,830 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,881 |
| Countries that Start with U | 0 | - | 4.97 | 909,224 |
| Countries that Start with V | 0 | - | 4.98 | 612,549 |
| Countries that Start with F | 0 | - | 4.83 | 622,019 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,594 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,624 |
| Orthodox Countries | 0 | - | 4.92 | 132,955 |
| Richest Island Countries | 0 | - | 4.85 | 101,353 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,019 |
| Monarchies of Europe | 0 | - | 4.90 | 99,024 |
| Monarchies of Asia | 0 | - | 4.97 | 71,604 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,343 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,351 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,359 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,374 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,674 |
| Countries by Oil Consumption | 0 | - | 4.96 | 124,855 |
| Largest Economies in 2050 | 0 | - | 4.88 | 112,065 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,551 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,143 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 85,221 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,694 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,341 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,242 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,500 |
| Countries with Megacities | 0 | - | 4.99 | 267,846 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,148 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,337 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,473 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,437 |
| Countries by Official Language | 0 | - | 4.95 | 196,220 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,943 |
| Countries in their Native Language | 0 | - | 4.99 | 199,959 |
| Independence from Whom | 0 | - | 4.99 | 213,405 |
| Subdivisions by Country | 0 | - | 4.87 | 50,666 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,664 |
| Megadiverse Countries | 0 | - | 4.96 | 149,033 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,136 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,577 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,806 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,470 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,278 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,626 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,166 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,287 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,769 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,488 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,507 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,218 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,943 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,233 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,397 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,815 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,513 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,234 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,704 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,930 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,550 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,662 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,849 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,764 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,939 |
| Widest Countries East to West | 0 | - | 4.92 | 130,852 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,628 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,402 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,563 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,159 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,109 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,616 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,534 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,629 |
| Countries that End in N | 0 | - | 4.95 | 172,630 |
| Countries with Five Letters | 0 | - | 4.96 | 284,639 |
| Countries with Six Letters | 0 | - | 4.94 | 214,959 |
| Countries with W | 0 | - | 4.96 | 161,316 |
| Countries with Z | 0 | - | 4.98 | 293,002 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,673 |
| Countries That End in U | 0 | - | 4.95 | 121,393 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,430 |
| Countries that End in O | 0 | - | 4.92 | 160,371 |
| Countries that End in R | 0 | - | 4.87 | 119,282 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,062 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,150 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,773 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,198 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,766 |
| Countries That End in Y | 0 | - | 4.91 | 186,176 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,285 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,422 |
| Countries that End in I | 0 | - | 4.94 | 135,424 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,270 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,147 |
| Countries That End in NIA | 0 | - | 4.92 | 110,159 |
| Countries That End in BIA | 0 | - | 4.93 | 149,740 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,933 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,906 |
| Countries That End in RIA | 0 | - | 4.93 | 127,147 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,545 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,944 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,394 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,859 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,408 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,922 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,459 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,609 |
