| Countries of the World Quiz | 0 | - | 5.00 | 47,732,718 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,616 |
| NATO Countries | 0 | - | 4.98 | 282,500 |
| EU Countries Quiz | 0 | - | 4.99 | 276,713 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,284 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,702 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,793 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,376 |
| Countries with NO Military | 0 | - | 4.97 | 62,922 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,931 |
| Landlocked Countries | 0 | - | 4.99 | 423,823 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,261 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,967 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,881 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,037 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,711 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,809 |
| Buddhist Countries | 0 | - | 4.96 | 144,835 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,426 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,342 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,130 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,349 |
| Himalayan Countries | 0 | - | 4.94 | 139,525 |
| Andean Countries | 0 | - | 4.94 | 85,062 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,244 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,454 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,806 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,117 |
| Danube Countries | 0 | - | 4.97 | 72,209 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,306 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,624 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,708 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,215 |
| European Landlocked Countries | 0 | - | 4.99 | 147,377 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,975 |
| Countries with the Most Species | 0 | - | 4.99 | 103,421 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,113 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,681 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,793 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,695 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,439 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,850 |
| Countries in the Alps | 0 | - | 4.87 | 118,492 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,075 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,455 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,811 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,812 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,747 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,920 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,672 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,298 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,018 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,762 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,632 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,388 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,721 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,377 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,475 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,234 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,359 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,918 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,654 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,381 |
| Largest Countries By Category | 0 | - | 4.97 | 158,547 |
| Countries by Countries | 0 | - | 4.96 | 63,443 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,906 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,248 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,101 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,560 |
| Island Countries | 0 | - | 4.99 | 711,762 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,447 |
| Northernmost Countries | 0 | - | 4.99 | 363,077 |
| Countries of South America | 0 | - | 5.00 | 929,973 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,256 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,366 |
| "Land" Countries | 0 | - | 4.98 | 337,884 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,244 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,351 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,265 |
| Countries that Start with D | 0 | - | 4.96 | 714,120 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,377 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,670 |
| Countries that Start with H | 0 | - | 4.96 | 607,930 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,457 |
| Countries that Start with J | 0 | - | 4.98 | 605,408 |
| Countries that Start with K | 0 | - | 4.97 | 819,091 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,717 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,758 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,054 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,352 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,299 |
| Countries that Start with U | 0 | - | 4.97 | 907,183 |
| Countries that Start with V | 0 | - | 4.98 | 611,074 |
| Countries that Start with F | 0 | - | 4.83 | 620,032 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,054 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,112 |
| Orthodox Countries | 0 | - | 4.92 | 132,543 |
| Richest Island Countries | 0 | - | 4.85 | 100,998 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,520 |
| Monarchies of Europe | 0 | - | 4.90 | 98,591 |
| Monarchies of Asia | 0 | - | 4.97 | 71,369 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,520 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,157 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,934 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,875 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,230 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,641 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,756 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,784 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,742 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,887 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,277 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,814 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,847 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,447 |
| Countries with Megacities | 0 | - | 4.99 | 265,874 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,238 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,752 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,497 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,850 |
| Countries by Official Language | 0 | - | 4.95 | 195,643 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,081 |
| Countries in their Native Language | 0 | - | 4.99 | 199,418 |
| Independence from Whom | 0 | - | 4.99 | 212,567 |
| Subdivisions by Country | 0 | - | 4.87 | 50,534 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,074 |
| Megadiverse Countries | 0 | - | 4.96 | 135,155 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,439 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,460 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,340 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,163 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,375 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,699 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,742 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,748 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,207 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,095 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,241 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,332 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,059 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,595 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,738 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,181 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,532 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,661 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,680 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,335 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,964 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,196 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,317 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,536 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,586 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,971 |
| Widest Countries East to West | 0 | - | 4.92 | 130,194 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,530 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,024 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,439 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,932 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,806 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,084 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,447 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,853 |
| Countries with Double Letters | 0 | - | 4.96 | 96,684 |
| Countries that End in N | 0 | - | 4.95 | 171,566 |
| Countries with Five Letters | 0 | - | 4.96 | 283,214 |
| Countries with Six Letters | 0 | - | 4.94 | 214,025 |
| Countries with W | 0 | - | 4.96 | 160,642 |
| Countries with Z | 0 | - | 4.98 | 291,970 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,009 |
| Countries That End in U | 0 | - | 4.95 | 121,023 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,795 |
| Countries that End in O | 0 | - | 4.92 | 159,672 |
| Countries that End in R | 0 | - | 4.87 | 119,073 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,831 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,470 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,936 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,650 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,576 |
| Countries That End in Y | 0 | - | 4.91 | 185,999 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,189 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,075 |
| Countries that End in I | 0 | - | 4.94 | 135,216 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,379 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,933 |
| Countries That End in NIA | 0 | - | 4.92 | 109,923 |
| Countries That End in BIA | 0 | - | 4.93 | 149,401 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,336 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,623 |
| Countries That End in RIA | 0 | - | 4.93 | 126,940 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,216 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,108 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,957 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,393 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,937 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,691 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,190 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,490 |
