| NATO Countries | 0 | - | 4.98 | 280,425 |
| EU Countries Quiz | 0 | - | 4.99 | 274,244 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,459,708 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,336 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,378 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,213 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,516 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 148,509 |
| Countries with NO Military | 0 | - | 4.97 | 62,312 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,606 |
| Landlocked Countries | 0 | - | 4.99 | 420,530 |
| All OPEC Countries Ever | 0 | - | 4.74 | 98,151 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,210 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,404 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,553 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,791 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,228 |
| Buddhist Countries | 0 | - | 4.96 | 144,348 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,444 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,568 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,621 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,997 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,675 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,742 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,613 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,232 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,214 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,582 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,245 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,157 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,999 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,268 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,664 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,261 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,710 |
| Himalayan Countries | 0 | - | 4.95 | 138,084 |
| Andean Countries | 0 | - | 4.95 | 84,264 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,488 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,329 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,120 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,562 |
| Danube Countries | 0 | - | 4.97 | 71,835 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,792 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,234 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,970 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,423 |
| European Landlocked Countries | 0 | - | 4.99 | 146,964 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,374 |
| Countries with the Most Species | 0 | - | 4.99 | 103,091 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,530 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,506 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,658 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,444 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,115 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,504 |
| Countries in the Alps | 0 | - | 4.87 | 117,957 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,447 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,710 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,548 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,454 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,306 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,831 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,468 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,339 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,076 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,702 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,567 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,420 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,070 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,365 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,541 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,179 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,690 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,822 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,171 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,665 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,109 |
| Largest Countries By Category | 0 | - | 4.97 | 157,928 |
| Countries by Countries | 0 | - | 4.97 | 63,012 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,509 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,284 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,043 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,236 |
| Island Countries | 0 | - | 4.99 | 710,391 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,876 |
| Northernmost Countries | 0 | - | 4.99 | 361,220 |
| Countries of South America | 0 | - | 5.00 | 925,107 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,030 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,920 |
| "Land" Countries | 0 | - | 4.98 | 336,392 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,702 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,404 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,121 |
| Countries that Start with D | 0 | - | 4.96 | 709,647 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,228 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,362 |
| Countries that Start with H | 0 | - | 4.96 | 604,786 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,350 |
| Countries that Start with J | 0 | - | 4.98 | 602,468 |
| Countries that Start with K | 0 | - | 4.97 | 815,821 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,781 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,753 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,154 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,848 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,872 |
| Countries that Start with U | 0 | - | 4.97 | 904,530 |
| Countries that Start with V | 0 | - | 4.98 | 609,373 |
| Countries that Start with F | 0 | - | 4.83 | 617,635 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,719 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,429 |
| Orthodox Countries | 0 | - | 4.92 | 131,949 |
| Richest Island Countries | 0 | - | 4.85 | 100,545 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,671 |
| Monarchies of Europe | 0 | - | 4.90 | 98,154 |
| Monarchies of Asia | 0 | - | 4.97 | 71,092 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,838 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,893 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,400 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,414 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,715 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,416 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,454 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,542 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,300 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,540 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,744 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,189 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 72,783 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,865 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,538 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,007 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,079 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,367 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,467 |
| Countries with Megacities | 0 | - | 4.99 | 263,415 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,302 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,244 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,600 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,286 |
| Countries by Official Language | 0 | - | 4.95 | 194,938 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,955 |
| Countries in their Native Language | 0 | - | 4.99 | 198,461 |
| Independence from Whom | 0 | - | 4.99 | 211,717 |
| Subdivisions by Country | 0 | - | 4.86 | 50,361 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,984 |
| Megadiverse Countries | 0 | - | 4.96 | 134,882 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,804 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,259 |
| 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 | 162,915 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,482 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,221 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,937 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,042 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,344 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,794 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,095 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,871 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,187 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,130 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,913 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,198 |
| Communist Countries in History | 0 | - | 4.63 | 495,742 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,784 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,095 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,832 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,774 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,725 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,857 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,135 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,353 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,434 |
| Widest Countries East to West | 0 | - | 4.92 | 129,505 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,416 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,166 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,063 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,642 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,414 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,707 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,311 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,400 |
| Countries that End in N | 0 | - | 4.95 | 170,436 |
| Countries with Five Letters | 0 | - | 4.96 | 281,390 |
| Countries with Six Letters | 0 | - | 4.94 | 212,848 |
| Countries with W | 0 | - | 4.97 | 159,733 |
| Countries with Z | 0 | - | 4.98 | 290,661 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,997 |
| Countries That End in U | 0 | - | 4.95 | 120,528 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,021 |
| Countries that End in O | 0 | - | 4.92 | 159,297 |
| Countries that End in R | 0 | - | 4.87 | 118,810 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,582 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,633 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,340 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,227 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,847 |
