| European Countries by First 2 Letters | 0 | - | 4.95 | 531,902 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,635 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,359 |
| States of Germany | 0 | - | 4.95 | 154,086 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,567 |
| Regions of Italy | 0 | - | 4.92 | 76,764 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,676 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,068 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,814 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,596 |
| Official European Union Languages | 0 | - | 4.97 | 239,489 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,487 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,325 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,284 |
| Asia Map Quiz | 0 | - | 4.99 | 923,436 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,238 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,009 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,719 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,401 |
| History of Italy | 0 | - | 4.55 | 32,116 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,226 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,788 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,391 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,477 |
| Celtic Nations | 0 | - | 4.61 | 47,068 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,905 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,294 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,102 |
| Counties of England | 0 | - | 4.97 | 801,521 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,335 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,523 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,646 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,397 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,744 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,018 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,614 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,148 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,915 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,308 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,439 |
| Countries of the Middle East | 0 | - | 4.96 | 202,331 |
| Regions of France | 0 | - | 4.70 | 121,802 |
| France Immigration by Country | 0 | - | 4.70 | 76,845 |
| Famous Germans | 0 | - | 4.50 | 55,700 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Germany True or False? | 0 | - | 4.61 | 48,975 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,360 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,238 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,650 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,385 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,670 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,590 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,642 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,700 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,323 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,753 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,028 |
| History of Austria | 0 | - | 4.70 | 17,959 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,398 |
| Geography of the French Empire | 0 | - | 4.45 | 27,200 |
| The French Revolution | 0 | - | 4.47 | 24,120 |
| France Multiple Choice | 0 | - | 4.39 | 40,816 |
| History of France | 0 | - | 4.61 | 57,493 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,595 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| The Vikings! | 0 | - | 4.46 | 28,395 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| American to British Word Translation | 0 | - | 4.14 | 139,563 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,028 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,400 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,722 |
| Champions League Winners | 0 | - | 4.92 | 1,013,782 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,894 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,640 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,928 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,650 |
| Monarchies of Asia | 0 | - | 4.97 | 71,413 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,205 |
| Provinces of Turkey | 0 | - | 4.94 | 205,473 |
| Provinces of China | 0 | - | 4.97 | 207,184 |
| Japanese Prefectures | 0 | - | 4.98 | 138,549 |
| States of India | 0 | - | 4.95 | 195,318 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,231 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,520 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,509 |
| Departments of France | 0 | - | 4.93 | 54,904 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,711 |
| England or Wales? | 0 | - | 4.94 | 45,906 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,709 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,655 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,793 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,836 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,487 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,606 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,637 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,666 |
| Jordan Country Quiz | 0 | - | 4.86 | 32,025 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,673 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,928 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,741 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 94,554 |
| Japan Country Quiz | 0 | - | 4.93 | 143,140 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,243 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,356 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,508 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,922 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,711 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,165 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,332 |
| Slavic Languages | 0 | - | 4.67 | 54,627 |
| Famous French People | 0 | - | 4.07 | 36,019 |
| Word Chain - France | 0 | - | 4.38 | 42,905 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,710 |
| Italian Foods | 0 | - | 4.30 | 73,157 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,594 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,981 |
| British Spellings | 0 | - | 4.06 | 99,569 |
| British Groups of Things | 0 | - | 4.25 | 82,977 |
| British Acronyms | 0 | - | 4.40 | 45,905 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,089 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,060 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,745 |
| The Only Remaining Asian Country . . . | 0 | - | 4.64 | 46,058 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 44,115 |
| Countries Closest to Yemen | 0 | - | 4.92 | 22,727 |
| States of India Map Quiz | 0 | - | 4.84 | 26,819 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,819 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,021 |
| Geography of Germany | 0 | - | 4.35 | 17,250 |
| History of Germany | 0 | - | 4.39 | 52,950 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,879 |
| Name that Greek Letter | 0 | - | 4.93 | 324,724 |
| Byzantine History | 0 | - | 4.91 | 28,997 |
| Byzantine Emperors | 0 | - | 4.93 | 14,524 |
| History of Spain | 0 | - | 4.23 | 21,147 |
| Languages of Spain | 0 | - | 4.36 | 23,403 |
| British to American Word Translation | 0 | - | 3.74 | 255,283 |
| British Foods by Description | 0 | - | 3.94 | 48,368 |
| British and American Word Differences | 0 | - | 2.63 | 46,917 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,196 |
| Bridges of London | 0 | - | 4.17 | 10,136 |
| British Sport Trivia | 0 | - | 4.37 | 20,512 |
| Famous Welsh People | 0 | - | 4.34 | 11,658 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,624 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 417,436 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,961 |
| Countries that Border Iraq | 0 | - | 4.97 | 109,016 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,799 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,793 |
| Countries Bordering Saudi Arabia | 0 | - | 4.96 | 133,617 |
| Oman Country Quiz | 0 | - | 4.86 | 27,041 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 56,013 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 104,942 |
| Countries Closest to Vietnam | 0 | - | 4.96 | 94,299 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 78,086 |
| Brunei Country Quiz | 0 | - | 4.87 | 22,049 |
| Countries that Border China | 0 | - | 4.96 | 264,026 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,741 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,439 |
| Countries Closest to Japan | 0 | - | 4.92 | 139,073 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,629 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,319 |
| Countries Bordering India | 0 | - | 4.98 | 163,739 |
| Countries Closest to India | 0 | - | 4.97 | 103,127 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,671 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,837 |
| Movies Set in France | 0 | - | 4.26 | 13,144 |
| French Inventions | 0 | - | 4.10 | 13,919 |
| History of Paris | 0 | - | 4.24 | 13,670 |
| Word Chain - Germany | 0 | - | 4.31 | 22,661 |
| The Trojan War | 0 | - | 4.83 | 39,940 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,721 |
| Word Chain - Italy | 0 | - | 4.07 | 23,208 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,503 |
| Roman Emperors | 0 | - | 4.95 | 120,943 |
| Famous Nordic People | 0 | - | 4.34 | 20,253 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,635 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,051 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,389 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,568 |
| People on Money - England | 0 | - | 4.29 | 16,637 |
| Name a Valid English City | 0 | - | 4.19 | 16,799 |
| Asian Physical Geography | 0 | - | 4.61 | 35,599 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,358 |
| East Asian Islands on the Map | 0 | - | 4.55 | 33,182 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 71,518 |
| Asian Island Nations | 0 | - | 4.63 | 94,408 |
| Asia's Busiest Airports | 0 | - | 4.69 | 53,059 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 26,108 |
| Arab Spring Countries | 0 | - | 4.51 | 44,197 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,851 |
| Countries that Beat China | 0 | - | 4.85 | 116,551 |
| Closest Countries to North Korea | 0 | - | 4.94 | 123,143 |
| Hindu Countries | 0 | - | 4.87 | 50,489 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,085 |
