| European Countries by First 2 Letters | 0 | - | 4.95 | 526,326 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,046 |
| States of Germany | 0 | - | 4.96 | 150,029 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,008 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Regions of Italy | 0 | - | 4.92 | 74,715 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,807 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,331 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,140 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,405 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,577 |
| Official European Union Languages | 0 | - | 4.97 | 236,514 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,699 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,186 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,411 |
| Asia Map Quiz | 0 | - | 4.99 | 906,964 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,536 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,566 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,460 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,879 |
| History of Italy | 0 | - | 4.55 | 31,814 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,158 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,480 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,846 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,818 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,867 |
| Counties of England | 0 | - | 4.97 | 789,135 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,894 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,495 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,342 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,757 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,404 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,238 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,699 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,479 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,679 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,764 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,150 |
| Countries of the Middle East | 0 | - | 4.96 | 198,900 |
| Regions of France | 0 | - | 4.78 | 119,231 |
| France Immigration by Country | 0 | - | 4.72 | 75,963 |
| Famous Germans | 0 | - | 4.50 | 54,611 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany True or False? | 0 | - | 4.61 | 48,533 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,459 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,784 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,953 |
| States of India | 0 | - | 4.94 | 190,028 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,327 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,212 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,142 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,240 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,963 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,112 |
| Geography of the French Empire | 0 | - | 4.48 | 26,931 |
| The French Revolution | 0 | - | 4.46 | 23,784 |
| France Multiple Choice | 0 | - | 4.38 | 40,634 |
| History of France | 0 | - | 4.59 | 56,036 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,676 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| American to British Word Translation | 0 | - | 4.06 | 117,057 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,702 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,906 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,072 |
| Champions League Winners | 0 | - | 4.92 | 996,290 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,995 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,031 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,356 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,404 |
| Monarchies of Asia | 0 | - | 4.97 | 70,596 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,431 |
| Provinces of Turkey | 0 | - | 4.95 | 200,993 |
| Provinces of China | 0 | - | 4.97 | 200,105 |
| Japanese Prefectures | 0 | - | 4.98 | 134,562 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,208 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,887 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,773 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,329 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,515 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,196 |
| Departments of France | 0 | - | 4.93 | 52,805 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,366 |
| England or Wales? | 0 | - | 4.94 | 45,314 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,487 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,487 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,250 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,048 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 82,979 |
| Syria Country Quiz | 0 | - | 4.81 | 32,305 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,444 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,794 |
| China Cities Map Quiz | 0 | - | 4.93 | 104,038 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 92,777 |
| Japan Country Quiz | 0 | - | 4.92 | 141,235 |
| States of India Map Quiz | 0 | - | 4.82 | 26,036 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,448 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,981 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,035 |
| Slavic Languages | 0 | - | 4.67 | 53,980 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Italian Foods | 0 | - | 4.31 | 72,180 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,245 |
| Canary Islands | 0 | - | 4.61 | 17,402 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,149 |
| British Spellings | 0 | - | 4.07 | 99,203 |
| British Groups of Things | 0 | - | 4.25 | 82,669 |
| British Acronyms | 0 | - | 4.39 | 45,619 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,945 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,154 |
| The Only Remaining Asian Country . . . | 0 | - | 4.69 | 45,461 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 43,259 |
| Countries Closest to Yemen | 0 | - | 4.91 | 22,310 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,781 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,854 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,015 |
| Countries Bordering India | 0 | - | 4.98 | 162,599 |
| Countries Closest to India | 0 | - | 4.97 | 102,205 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,791 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,512 |
| Geography of Germany | 0 | - | 4.35 | 17,086 |
| History of Germany | 0 | - | 4.39 | 52,614 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,852 |
| Name that Greek Letter | 0 | - | 4.94 | 321,650 |
| Byzantine History | 0 | - | 4.91 | 28,620 |
| History of Spain | 0 | - | 4.29 | 21,000 |
| Languages of Spain | 0 | - | 4.36 | 23,147 |
| British to American Word Translation | 0 | - | 3.74 | 253,296 |
| British Foods by Description | 0 | - | 3.94 | 48,230 |
| British and American Word Differences | 0 | - | 2.67 | 45,912 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,507 |
| Bridges of London | 0 | - | 4.17 | 10,063 |
| British Sport Trivia | 0 | - | 4.37 | 20,363 |
| Famous Welsh People | 0 | - | 4.21 | 9,770 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,147 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 412,777 |
| Qatar Country Quiz | 0 | - | 4.85 | 31,290 |
| Countries Bordering Iran | 0 | - | 4.83 | 94,778 |
| Countries that Border Iraq | 0 | - | 4.97 | 107,844 |
| Countries Closest to Turkey | 0 | - | 4.96 | 125,338 |
| Countries Bordering Turkey | 0 | - | 4.98 | 116,480 |
| Countries Bordering Saudi Arabia | 0 | - | 4.95 | 118,224 |
| Oman Country Quiz | 0 | - | 4.86 | 26,677 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 54,889 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,409 |
| Countries Closest to Indonesia | 0 | - | 4.96 | 103,950 |
| Countries Closest to Vietnam | 0 | - | 4.95 | 93,502 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 77,077 |
| Brunei Country Quiz | 0 | - | 4.87 | 21,760 |
| Countries that Border China | 0 | - | 4.96 | 261,809 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 76,936 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 59,703 |
| Countries Closest to Japan | 0 | - | 4.92 | 137,905 |
| Closest Countries to North Korea | 0 | - | 4.94 | 121,797 |
| Hindu Countries | 0 | - | 4.85 | 49,570 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,523 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,125 |
| History of Russia Quiz | 0 | - | 4.49 | 31,791 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,565 |
| Famous French People | 0 | - | 4.12 | 27,943 |
| Movies Set in France | 0 | - | 4.26 | 13,073 |
| French Inventions | 0 | - | 4.08 | 13,865 |
| History of Paris | 0 | - | 4.24 | 13,615 |
| Word Chain - Germany | 0 | - | 4.31 | 22,475 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,529 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,043 |
| Roman Emperors | 0 | - | 4.95 | 118,481 |
| Famous Nordic People | 0 | - | 4.34 | 19,855 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,543 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,385 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,239 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| People on Money - England | 0 | - | 4.29 | 16,562 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,324 |
| Asian Physical Geography | 0 | - | 4.61 | 35,370 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,095 |
| East Asian Islands on the Map | 0 | - | 4.54 | 32,927 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 70,829 |
| Asian Island Nations | 0 | - | 4.63 | 93,752 |
| Asia's Busiest Airports | 0 | - | 4.77 | 52,280 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 25,680 |
| Arab Spring Countries | 0 | - | 4.51 | 43,819 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,029 |
| Countries that Beat China | 0 | - | 4.86 | 114,705 |
| India Cities Map Quiz | 0 | - | 4.63 | 60,666 |
| Countries of the Indian Diaspora | 0 | - | 4.46 | 53,928 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,338 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
