| Countries of the World Quiz | 0 | - | 5.00 | 46,861,413 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,073 |
| NATO Countries | 0 | - | 4.98 | 275,204 |
| EU Countries Quiz | 0 | - | 4.99 | 269,506 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,564 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,759 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,810 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,601 |
| Countries with NO Military | 0 | - | 4.97 | 61,078 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,846 |
| Landlocked Countries | 0 | - | 4.99 | 412,973 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,281 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,163 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,645 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,029 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,629 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,816 |
| Buddhist Countries | 0 | - | 4.96 | 142,838 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,521 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 121,884 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,690 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,301 |
| Himalayan Countries | 0 | - | 4.95 | 135,094 |
| Andean Countries | 0 | - | 4.94 | 82,689 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,100 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,023 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,789 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,492 |
| Danube Countries | 0 | - | 4.97 | 71,012 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,658 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,468 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,315 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,230 |
| European Landlocked Countries | 0 | - | 4.99 | 145,680 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,070 |
| Countries with the Most Species | 0 | - | 4.99 | 95,199 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,224 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,178 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,335 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,913 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,524 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,882 |
| Countries in the Alps | 0 | - | 4.87 | 116,705 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,489 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,109 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,949 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,335 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,075 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,942 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,486 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,695 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,313 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,983 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,168 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,003 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,378 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,686 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,686 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,903 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,579 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,208 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,692 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,896 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,408 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,548 |
| Largest Countries By Category | 0 | - | 4.97 | 156,644 |
| Countries by Countries | 0 | - | 4.96 | 62,184 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,671 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,152 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,870 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,057 |
| Island Countries | 0 | - | 4.99 | 707,286 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,514 |
| Northernmost Countries | 0 | - | 4.99 | 357,322 |
| Countries of South America | 0 | - | 5.00 | 913,585 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,881 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,586 |
| "Land" Countries | 0 | - | 4.98 | 333,456 |
| Countries that Start with A | 0 | - | 4.98 | 2,144,961 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,270 |
| Countries that Start with C | 0 | - | 4.96 | 1,808,999 |
| Countries that Start with D | 0 | - | 4.96 | 700,657 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,476 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,660 |
| Countries that Start with H | 0 | - | 4.96 | 597,195 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,363 |
| Countries that Start with J | 0 | - | 4.98 | 595,278 |
| Countries that Start with K | 0 | - | 4.96 | 808,722 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,074 |
| Countries that Start with N | 0 | - | 4.93 | 1,108,939 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,762 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,385 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,542 |
| Countries that Start with U | 0 | - | 4.97 | 899,333 |
| Countries that Start with V | 0 | - | 4.98 | 604,611 |
| Countries that Start with F | 0 | - | 4.83 | 611,577 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,430 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,894 |
| Orthodox Countries | 0 | - | 4.91 | 130,269 |
| Richest Island Countries | 0 | - | 4.84 | 99,405 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,373 |
| Monarchies of Europe | 0 | - | 4.90 | 97,224 |
| Monarchies of Asia | 0 | - | 4.97 | 70,545 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,285 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,383 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,171 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,035 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,364 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,468 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,553 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,775 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,832 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,611 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,492 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,757 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,341 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,894 |
| Countries with Megacities | 0 | - | 4.99 | 246,266 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,813 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,750 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,272 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,688 |
| Countries by Official Language | 0 | - | 4.95 | 192,609 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,918 |
| Countries in their Native Language | 0 | - | 4.99 | 196,498 |
| Independence from Whom | 0 | - | 4.99 | 209,509 |
| Subdivisions by Country | 0 | - | 4.86 | 50,035 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,600 |
| Megadiverse Countries | 0 | - | 4.97 | 133,837 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,665 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,881 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,839 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,561 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,944 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,606 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,070 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,185 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,718 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,416 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,372 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,443 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,456 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,011 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,686 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,240 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,232 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,186 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,894 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,865 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,540 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,785 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,979 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,186 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,886 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,272 |
| Widest Countries East to West | 0 | - | 4.92 | 128,535 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,194 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,099 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,528 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,632 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,528 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,958 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,032 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,553 |
| Countries with Double Letters | 0 | - | 4.97 | 93,244 |
| Countries that End in N | 0 | - | 4.94 | 156,307 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,516 |
| Countries with Six Letters | 0 | - | 4.93 | 210,214 |
| Countries with W | 0 | - | 4.97 | 158,116 |
| Countries with Z | 0 | - | 4.98 | 287,566 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,444 |
| Countries That End in U | 0 | - | 4.95 | 119,457 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,370 |
| Countries that End in O | 0 | - | 4.92 | 158,484 |
| Countries that End in R | 0 | - | 4.86 | 118,212 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,814 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,885 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,196 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,399 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,578 |
| Countries That End in Y | 0 | - | 4.90 | 185,159 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,199 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,566 |
| Countries that End in I | 0 | - | 4.94 | 134,325 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,037 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,149 |
| Countries That End in NIA | 0 | - | 4.92 | 108,941 |
| Countries That End in BIA | 0 | - | 4.92 | 147,622 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,989 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,418 |
| Countries That End in RIA | 0 | - | 4.93 | 126,022 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,928 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,008 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,449 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,828 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,269 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,871 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,044 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,565 |
