| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,775 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,484 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,457 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,355 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,176 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,176 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,234 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,268 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,198 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,181 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,810 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,027 |
| Metals of Antiquity | 0 | - | 4.94 | 92,991 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,561 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,630 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,740 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,869 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,548 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,400 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,361 |
| Biggest Trading Partners - Turkey | 0 | - | 4.80 | 50,253 |
| Biggest Trading Partners - South Africa | 0 | - | 4.80 | 40,147 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,011 |
| Countries with Glaciers | 0 | - | 4.97 | 104,736 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,699 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,713 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,058 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,296 |
| Elements Named for Countries | 0 | - | 4.52 | 24,447 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,208 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,176 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,211 |
| Orthodox Countries | 0 | - | 4.91 | 130,541 |
| Battle to Country | 0 | - | 4.91 | 52,622 |
| Monarchies of Europe | 0 | - | 4.90 | 97,455 |
| Monarchies of Asia | 0 | - | 4.97 | 70,674 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,493 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,748 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,656 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,695 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,881 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,431 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,877 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,220 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,701 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,286 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,250 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,710 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,153 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,648 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,754 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,118 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,357 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,233 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,552 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 104,890 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 105,140 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,999,488 |
| Countries in World War I | 0 | - | 4.88 | 226,773 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,605 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,341 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,949 |
| Hindu Countries | 0 | - | 4.86 | 49,649 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,403 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,951 |
| Movies with Landforms in the Name | 0 | - | 4.16 | 50,315 |
| Boundary Waters | 0 | - | 4.92 | 88,097 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,865 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,415 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,482 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,935 |
| World Capitals Quiz | 0 | - | 5.00 | 5,038,295 |
| Landlocked Countries | 0 | - | 4.99 | 414,588 |
| Countries with the Most Cathedrals | 0 | - | 4.51 | 39,886 |
| Least-Forested Countries | 0 | - | 4.53 | 64,944 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,773 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,486 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,149 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,857 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,454 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,529 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,767 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,071 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,390 |
| Top 10 U.S. States with the Longest Coastline | 0 | - | 4.45 | 50,712 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,040 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,908 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,610 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,008 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,821 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,603 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,084 |
| Elements by Picture | 0 | - | 4.28 | 69,619 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,233 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,111 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,986 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,212 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,175 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,573,338 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,484 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,333 |
| Island Countries | 0 | - | 4.99 | 708,001 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,997 |
| Himalayan Countries | 0 | - | 4.95 | 135,699 |
| Andean Countries | 0 | - | 4.94 | 83,026 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,374 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,436 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,077 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,735 |
| Danube Countries | 0 | - | 4.97 | 71,181 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,899 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,637 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,703 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,607 |
| European Landlocked Countries | 0 | - | 4.99 | 145,876 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,364 |
| Countries with the Most Species | 0 | - | 4.99 | 95,299 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,532 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,235 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,404 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,015 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,653 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,023 |
| Countries in the Alps | 0 | - | 4.86 | 116,983 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,682 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,455 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,107 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,511 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,297 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,697 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,839 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,595 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,151 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,230 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,099 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,536 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,827 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,830 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,291 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,736 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,311 |
| Catholic Countries | 0 | - | 4.78 | 213,795 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,938 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,838 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,996 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,683 |
| Largest Countries By Category | 0 | - | 4.97 | 156,908 |
| Countries by Countries | 0 | - | 4.96 | 62,360 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,070 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,550 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,999 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,467 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,357 |
| Communist Countries in History | 0 | - | 4.63 | 492,998 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,858 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,786 |
| Northernmost Countries | 0 | - | 4.99 | 358,264 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,705 |
| Companies by Country | 0 | - | 4.61 | 118,810 |
| Countries of South America | 0 | - | 5.00 | 916,575 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,611 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,778 |
| "Land" Countries | 0 | - | 4.98 | 333,912 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,969 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,811 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,520 |
| UK Rivers Map Quiz | 0 | - | 4.54 | 30,277 |
| All Country Flags of the World | 0 | - | 5.00 | 3,611,458 |
| Top World Languages | 0 | - | 4.92 | 814,443 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,626 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,267 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,701 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,699 |
| Longest International Borders | 0 | - | 4.99 | 263,975 |
| Countries with Three Borders | 0 | - | 4.96 | 36,251 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,652 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,748 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,613 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,784 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,057 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,750 |
| Demonym of Every Country | 0 | - | 4.91 | 58,732 |
| Biblical Geography | 0 | - | 4.40 | 66,984 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,196 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,627 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,726 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,054 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,698 |
| Countries with Megacities | 0 | - | 4.99 | 247,745 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,549 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,236 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,951 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,178 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,386 |
| Biggest Cities in the World | 0 | - | 4.91 | 791,735 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,900 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,570 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,011 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.54 | 137,908 |
