| Countries of the World Quiz | 0 | - | 5.00 | 48,005,614 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,673 |
| NATO Countries | 0 | - | 4.98 | 284,257 |
| EU Countries Quiz | 0 | - | 4.99 | 279,180 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,128 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,310 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,944 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 150,122 |
| Countries with NO Military | 0 | - | 4.97 | 63,680 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,246 |
| Landlocked Countries | 0 | - | 4.99 | 427,692 |
| Countries with the Most Christians | 0 | - | 4.93 | 145,019 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,520 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,317 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,279 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,568 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,417 |
| Buddhist Countries | 0 | - | 4.96 | 145,317 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,490 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 125,111 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,530 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,127 |
| Himalayan Countries | 0 | - | 4.93 | 141,010 |
| Andean Countries | 0 | - | 4.94 | 85,895 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,007 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,623 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,551 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,757 |
| Danube Countries | 0 | - | 4.97 | 72,607 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,872 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,020 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,526 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,010 |
| European Landlocked Countries | 0 | - | 4.99 | 147,820 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,605 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,710 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,832 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,974 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,958 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,707 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,175 |
| Countries in the Alps | 0 | - | 4.87 | 119,047 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,118 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,253 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,091 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,218 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,189 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,424 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,643 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,033 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,537 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,350 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,977 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,851 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,705 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,961 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,063 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,256 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,768 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,768 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,904 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,557 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,632 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,642 |
| Largest Countries By Category | 0 | - | 4.97 | 159,188 |
| Countries by Countries | 0 | - | 4.97 | 63,853 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,288 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,030 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,171 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,631 |
| Island Countries | 0 | - | 4.99 | 713,192 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,714 |
| Northernmost Countries | 0 | - | 4.99 | 364,829 |
| Countries of South America | 0 | - | 5.00 | 934,909 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,254 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,621 |
| "Land" Countries | 0 | - | 4.98 | 339,170 |
| Countries that Start with A | 0 | - | 4.98 | 2,179,416 |
| Countries that Start with B | 0 | - | 4.95 | 2,310,052 |
| Countries that Start with C | 0 | - | 4.96 | 1,834,236 |
| Countries that Start with D | 0 | - | 4.96 | 718,383 |
| Countries that Start with E | 0 | - | 4.95 | 1,387,369 |
| Countries that Start with G | 0 | - | 4.97 | 1,513,964 |
| Countries that Start with H | 0 | - | 4.96 | 610,978 |
| Countries that Start with I | 0 | - | 4.92 | 1,296,495 |
| Countries that Start with J | 0 | - | 4.98 | 608,300 |
| Countries that Start with K | 0 | - | 4.97 | 822,188 |
| Countries that Start with L | 0 | - | 4.98 | 1,098,621 |
| Countries that Start with N | 0 | - | 4.93 | 1,125,720 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,825 |
| Countries that Start with S | 0 | - | 4.98 | 1,765,569 |
| Countries that Start with T | 0 | - | 4.90 | 1,016,298 |
| Countries that Start with U | 0 | - | 4.97 | 909,581 |
| Countries that Start with V | 0 | - | 4.98 | 612,788 |
| Countries that Start with F | 0 | - | 4.83 | 622,362 |
| Countries that Start with M | 0 | - | 4.97 | 1,390,159 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,709 |
| Orthodox Countries | 0 | - | 4.92 | 133,020 |
| Richest Island Countries | 0 | - | 4.85 | 101,419 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,442 |
| Monarchies of Europe | 0 | - | 4.90 | 99,085 |
| Monarchies of Asia | 0 | - | 4.97 | 71,643 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,427 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,386 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,438 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,465 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,757 |
| Countries by Oil Consumption | 0 | - | 4.96 | 125,313 |
| Largest Economies in 2050 | 0 | - | 4.88 | 112,120 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,816 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,210 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 85,283 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,773 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,404 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,304 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,651 |
| Countries with Megacities | 0 | - | 4.99 | 268,170 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,294 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,406 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,628 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,521 |
| Countries by Official Language | 0 | - | 4.95 | 196,325 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,084 |
| Countries in their Native Language | 0 | - | 4.99 | 200,038 |
| Independence from Whom | 0 | - | 4.99 | 213,535 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,751 |
| Megadiverse Countries | 0 | - | 4.96 | 149,755 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,216 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,594 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,845 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,548 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,956 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,374 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,655 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,890 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,530 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,249 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,995 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,325 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,431 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,863 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,630 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,290 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,763 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,060 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,614 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,729 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,903 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,784 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,014 |
| Widest Countries East to West | 0 | - | 4.92 | 130,906 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,465 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,196 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,477 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,649 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,771 |
| Countries that End in N | 0 | - | 4.95 | 172,774 |
| Countries with Five Letters | 0 | - | 4.96 | 284,832 |
| Countries with Six Letters | 0 | - | 4.94 | 215,108 |
| Countries with W | 0 | - | 4.96 | 161,421 |
| Countries with Z | 0 | - | 4.98 | 293,164 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,793 |
| Countries That End in U | 0 | - | 4.95 | 121,455 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,540 |
| Countries that End in O | 0 | - | 4.92 | 160,423 |
| Countries that End in R | 0 | - | 4.87 | 119,315 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,086 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,260 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,607 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,298 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,969 |
| Countries That End in Y | 0 | - | 4.91 | 186,203 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,508 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,481 |
| Countries that End in I | 0 | - | 4.94 | 135,461 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,445 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,180 |
| Countries That End in NIA | 0 | - | 4.92 | 110,194 |
| Countries That End in BIA | 0 | - | 4.93 | 149,788 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,002 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,948 |
| Countries That End in RIA | 0 | - | 4.93 | 127,195 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,590 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,065 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,462 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,925 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,484 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,955 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,514 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
