| Countries of the World Quiz | 0 | - | 5.00 | 47,464,210 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,380 |
| NATO Countries | 0 | - | 4.98 | 280,459 |
| EU Countries Quiz | 0 | - | 4.99 | 274,291 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,405 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,259 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,556 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,530 |
| Countries with NO Military | 0 | - | 4.97 | 62,329 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,610 |
| Landlocked Countries | 0 | - | 4.99 | 420,579 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,226 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,408 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,558 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,797 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,705 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,245 |
| Buddhist Countries | 0 | - | 4.96 | 144,359 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,466 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,575 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,912 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,732 |
| Himalayan Countries | 0 | - | 4.95 | 138,104 |
| Andean Countries | 0 | - | 4.95 | 84,274 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,493 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,346 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,125 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,571 |
| Danube Countries | 0 | - | 4.97 | 71,836 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,803 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,244 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,982 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,434 |
| European Landlocked Countries | 0 | - | 4.99 | 146,972 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,385 |
| Countries with the Most Species | 0 | - | 4.99 | 103,098 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,539 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,660 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,448 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,117 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,508 |
| Countries in the Alps | 0 | - | 4.87 | 117,963 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,550 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,724 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,459 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,311 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,834 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,473 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,342 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,079 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,706 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,074 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,352 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,369 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,550 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,181 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,692 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,826 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,208 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,684 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,113 |
| Largest Countries By Category | 0 | - | 4.97 | 157,934 |
| Countries by Countries | 0 | - | 4.97 | 63,018 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,513 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,344 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,059 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,259 |
| Island Countries | 0 | - | 4.99 | 710,412 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,944 |
| Northernmost Countries | 0 | - | 4.99 | 361,250 |
| Countries of South America | 0 | - | 5.00 | 925,151 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,098 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,077 |
| "Land" Countries | 0 | - | 4.98 | 336,494 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,830 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,529 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,233 |
| Countries that Start with D | 0 | - | 4.96 | 709,726 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,313 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,452 |
| Countries that Start with H | 0 | - | 4.96 | 604,832 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,410 |
| Countries that Start with J | 0 | - | 4.98 | 602,516 |
| Countries that Start with K | 0 | - | 4.97 | 815,871 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,838 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,822 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,218 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,945 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,919 |
| Countries that Start with U | 0 | - | 4.97 | 904,567 |
| Countries that Start with V | 0 | - | 4.98 | 609,398 |
| Countries that Start with F | 0 | - | 4.83 | 617,678 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,791 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,446 |
| Orthodox Countries | 0 | - | 4.92 | 131,962 |
| Richest Island Countries | 0 | - | 4.85 | 100,550 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,836 |
| Monarchies of Europe | 0 | - | 4.90 | 98,163 |
| Monarchies of Asia | 0 | - | 4.97 | 71,095 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,846 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,896 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,410 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,423 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,724 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,423 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,461 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,581 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,307 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,546 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,757 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,194 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,375 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,478 |
| Countries with Megacities | 0 | - | 4.99 | 263,465 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,317 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,257 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,614 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,294 |
| Countries by Official Language | 0 | - | 4.95 | 194,948 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,967 |
| Countries in their Native Language | 0 | - | 4.99 | 198,468 |
| Independence from Whom | 0 | - | 4.99 | 211,728 |
| Subdivisions by Country | 0 | - | 4.86 | 50,363 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,994 |
| Megadiverse Countries | 0 | - | 4.96 | 134,888 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,810 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,262 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,060 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,919 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,486 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,229 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,940 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,567 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,354 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,797 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,096 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,194 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,138 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,917 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,200 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,790 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,100 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,833 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,797 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,734 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,867 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,176 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,355 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,444 |
| Widest Countries East to West | 0 | - | 4.92 | 129,509 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,417 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,179 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,065 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,643 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,418 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,710 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,312 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,420 |
| Countries that End in N | 0 | - | 4.95 | 170,463 |
| Countries with Five Letters | 0 | - | 4.96 | 281,438 |
| Countries with Six Letters | 0 | - | 4.94 | 212,876 |
| Countries with W | 0 | - | 4.97 | 159,756 |
| Countries with Z | 0 | - | 4.98 | 290,693 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,024 |
| Countries That End in U | 0 | - | 4.95 | 120,535 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,037 |
| Countries that End in O | 0 | - | 4.92 | 159,303 |
| Countries that End in R | 0 | - | 4.87 | 118,813 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,585 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,646 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,343 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,234 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,855 |
| Countries That End in Y | 0 | - | 4.91 | 185,736 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,548 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,633 |
| Countries that End in I | 0 | - | 4.94 | 134,963 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,748 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,678 |
| Countries That End in NIA | 0 | - | 4.92 | 109,636 |
| Countries That End in BIA | 0 | - | 4.93 | 148,996 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,894 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,221 |
| Countries That End in RIA | 0 | - | 4.93 | 126,658 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,789 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,142 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,437 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,825 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,351 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,429 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,813 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,363 |
