| Countries of the World Quiz | 0 | - | 5.00 | 46,846,202 |
| Majority Muslim Countries | 0 | - | 4.98 | 367,959 |
| NATO Countries | 0 | - | 4.98 | 275,047 |
| EU Countries Quiz | 0 | - | 4.99 | 269,382 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,419 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,604 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,740 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,549 |
| Countries with NO Military | 0 | - | 4.97 | 61,046 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,823 |
| Landlocked Countries | 0 | - | 4.99 | 412,828 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,231 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,123 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,590 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 73,980 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,507 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,786 |
| Buddhist Countries | 0 | - | 4.96 | 142,816 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,385 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 121,797 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,709,220 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,211 |
| Himalayan Countries | 0 | - | 4.95 | 135,032 |
| Andean Countries | 0 | - | 4.94 | 82,650 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,074 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,971 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,746 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,453 |
| Danube Countries | 0 | - | 4.97 | 70,986 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,631 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,450 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,273 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,183 |
| European Landlocked Countries | 0 | - | 4.99 | 145,659 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,035 |
| Countries with the Most Species | 0 | - | 4.99 | 95,180 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,179 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,172 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,331 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,905 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,500 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,861 |
| Countries in the Alps | 0 | - | 4.87 | 116,675 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,459 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,052 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,935 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,316 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,059 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,932 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,456 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,675 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,111 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,963 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,164 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,994 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,356 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,667 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,667 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,848 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,554 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,196 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,657 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,798 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,340 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,528 |
| Largest Countries By Category | 0 | - | 4.97 | 156,596 |
| Countries by Countries | 0 | - | 4.96 | 62,156 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,648 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,962 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,805 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,953 |
| Island Countries | 0 | - | 4.99 | 707,206 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,252 |
| Northernmost Countries | 0 | - | 4.99 | 357,199 |
| Countries of South America | 0 | - | 5.00 | 913,251 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,432 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,844,830 |
| "Land" Countries | 0 | - | 4.98 | 333,398 |
| Countries that Start with A | 0 | - | 4.98 | 2,144,424 |
| Countries that Start with B | 0 | - | 4.95 | 2,277,818 |
| Countries that Start with C | 0 | - | 4.96 | 1,808,606 |
| Countries that Start with D | 0 | - | 4.96 | 700,415 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,160 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,343 |
| Countries that Start with H | 0 | - | 4.96 | 596,976 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,095 |
| Countries that Start with J | 0 | - | 4.98 | 595,048 |
| Countries that Start with K | 0 | - | 4.96 | 808,541 |
| Countries that Start with L | 0 | - | 4.98 | 1,081,840 |
| Countries that Start with N | 0 | - | 4.93 | 1,108,692 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,532 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,076 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,365 |
| Countries that Start with U | 0 | - | 4.97 | 898,965 |
| Countries that Start with V | 0 | - | 4.98 | 604,475 |
| Countries that Start with F | 0 | - | 4.83 | 611,403 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,140 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,864 |
| Orthodox Countries | 0 | - | 4.91 | 130,239 |
| Richest Island Countries | 0 | - | 4.84 | 99,357 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,876 |
| Monarchies of Europe | 0 | - | 4.90 | 97,192 |
| Monarchies of Asia | 0 | - | 4.97 | 70,529 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,243 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,375 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,144 |
| Countries with the Most Exports | 0 | - | 4.96 | 153,987 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,299 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,433 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,518 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,656 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,787 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,575 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,455 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,712 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,308 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,849 |
| Countries with Megacities | 0 | - | 4.99 | 246,127 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,761 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,726 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,228 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,660 |
| Countries by Official Language | 0 | - | 4.95 | 192,575 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,843 |
| Countries in their Native Language | 0 | - | 4.99 | 196,452 |
| Independence from Whom | 0 | - | 4.99 | 209,434 |
| Subdivisions by Country | 0 | - | 4.86 | 50,030 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,577 |
| Megadiverse Countries | 0 | - | 4.97 | 133,827 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,636 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,874 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,369 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,830 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,528 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,580 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,058 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,173 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,710 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,362 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,358 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,423 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,437 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,992 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,646 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,221 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,205 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,140 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,871 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,841 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,484 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,755 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,956 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,164 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,871 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,248 |
| Widest Countries East to West | 0 | - | 4.92 | 128,512 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,070 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,516 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,617 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,512 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,941 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,029 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,551 |
| Countries with Double Letters | 0 | - | 4.97 | 93,202 |
| Countries that End in N | 0 | - | 4.94 | 156,272 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,460 |
| Countries with Six Letters | 0 | - | 4.93 | 210,162 |
| Countries with W | 0 | - | 4.97 | 158,085 |
| Countries with Z | 0 | - | 4.98 | 287,265 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,422 |
| Countries That End in U | 0 | - | 4.95 | 119,435 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,311 |
| Countries that End in O | 0 | - | 4.92 | 158,467 |
| Countries that End in R | 0 | - | 4.86 | 118,193 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,805 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,848 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,173 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,373 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,560 |
| Countries That End in Y | 0 | - | 4.90 | 185,144 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,162 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,540 |
| Countries that End in I | 0 | - | 4.94 | 134,294 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,001 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,136 |
| Countries That End in NIA | 0 | - | 4.92 | 108,919 |
| Countries That End in BIA | 0 | - | 4.92 | 147,601 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,957 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,391 |
| Countries That End in RIA | 0 | - | 4.93 | 125,998 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,911 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,948 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,419 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,794 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,230 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,866 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,015 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,540 |
