| European Countries by First 2 Letters | 0 | - | 4.95 | 530,819 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,508 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,234 |
| States of Germany | 0 | - | 4.95 | 153,407 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,326 |
| Regions of Italy | 0 | - | 4.92 | 76,346 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,475 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,574 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,458 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,765 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,371 |
| Official European Union Languages | 0 | - | 4.97 | 239,024 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,196 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,375 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,967 |
| Asia Map Quiz | 0 | - | 4.99 | 920,308 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,134 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,930 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,395 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,133 |
| History of Italy | 0 | - | 4.55 | 32,069 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,017 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,734 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,311 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,438 |
| Celtic Nations | 0 | - | 4.69 | 47,006 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,670 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,581 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,567 |
| Counties of England | 0 | - | 4.97 | 799,463 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,525 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,422 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,453 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,093 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,408 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,285 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,309 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,856 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,694 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,896 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,205 |
| Countries of the Middle East | 0 | - | 4.96 | 201,802 |
| Regions of France | 0 | - | 4.70 | 121,358 |
| France Immigration by Country | 0 | - | 4.70 | 76,706 |
| Famous Germans | 0 | - | 4.50 | 55,556 |
| German Groups of Things | 0 | - | 4.46 | 38,536 |
| Germany True or False? | 0 | - | 4.61 | 48,910 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,180 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,881 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,528 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,358 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,487 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,025 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,440 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,602 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,306 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,398 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,193 |
| History of Austria | 0 | - | 4.70 | 17,918 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,928 |
| Geography of the French Empire | 0 | - | 4.45 | 27,162 |
| The French Revolution | 0 | - | 4.47 | 24,072 |
| France Multiple Choice | 0 | - | 4.39 | 40,778 |
| History of France | 0 | - | 4.61 | 57,318 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,280 |
| The Vikings! | 0 | - | 4.46 | 28,373 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,364 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,965 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,206 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,310 |
| Champions League Winners | 0 | - | 4.92 | 1,010,516 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,752 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,327 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,624 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,432 |
| Monarchies of Asia | 0 | - | 4.97 | 71,270 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,058 |
| Provinces of Turkey | 0 | - | 4.94 | 204,806 |
| Provinces of China | 0 | - | 4.97 | 205,913 |
| Japanese Prefectures | 0 | - | 4.98 | 137,855 |
| States of India | 0 | - | 4.95 | 194,386 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,165 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,573 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,842 |
| Departments of France | 0 | - | 4.93 | 54,557 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,627 |
| England or Wales? | 0 | - | 4.94 | 45,820 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,141 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,534 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,555 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,422 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,308 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,532 |
| Syria Country Quiz | 0 | - | 4.81 | 32,905 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,917 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,456 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,740 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,517 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 93,981 |
| Japan Country Quiz | 0 | - | 4.93 | 142,820 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,046 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,134 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,378 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,837 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,660 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,934 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,750 |
| Slavic Languages | 0 | - | 4.68 | 54,498 |
| Famous French People | 0 | - | 4.07 | 35,897 |
| Word Chain - France | 0 | - | 4.38 | 42,858 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,677 |
| Italian Foods | 0 | - | 4.30 | 72,995 |
| History of The Netherlands | 0 | - | 4.46 | 17,493 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,523 |
| Canary Islands | 0 | - | 4.62 | 17,498 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,846 |
| British Spellings | 0 | - | 4.06 | 99,518 |
| British Groups of Things | 0 | - | 4.25 | 82,919 |
| British Acronyms | 0 | - | 4.40 | 45,863 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,977 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,642 |
| The Only Remaining Asian Country . . . | 0 | - | 4.64 | 45,947 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 43,982 |
| Countries Closest to Yemen | 0 | - | 4.92 | 22,645 |
| States of India Map Quiz | 0 | - | 4.83 | 26,642 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,676 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,890 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,512 |
| Geography of Germany | 0 | - | 4.35 | 17,213 |
| History of Germany | 0 | - | 4.39 | 52,909 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,406 |
| Name that Greek Letter | 0 | - | 4.93 | 324,268 |
| Byzantine History | 0 | - | 4.91 | 28,927 |
| Byzantine Emperors | 0 | - | 4.92 | 14,400 |
| History of Spain | 0 | - | 4.23 | 21,124 |
| Languages of Spain | 0 | - | 4.36 | 23,360 |
| British to American Word Translation | 0 | - | 3.74 | 255,195 |
| British Foods by Description | 0 | - | 3.94 | 48,347 |
| British and American Word Differences | 0 | - | 2.63 | 46,903 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,021 |
| Bridges of London | 0 | - | 4.17 | 10,123 |
| British Sport Trivia | 0 | - | 4.37 | 20,488 |
| Famous Welsh People | 0 | - | 4.31 | 11,578 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,536 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 416,175 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,604 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,707 |
| Countries that Border Iraq | 0 | - | 4.97 | 108,778 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,609 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,570 |
| Countries Bordering Saudi Arabia | 0 | - | 4.96 | 132,847 |
| Oman Country Quiz | 0 | - | 4.86 | 26,981 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 55,799 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 104,757 |
| Countries Closest to Vietnam | 0 | - | 4.95 | 94,166 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 77,928 |
| Brunei Country Quiz | 0 | - | 4.87 | 21,989 |
| Countries that Border China | 0 | - | 4.96 | 263,637 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,591 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,306 |
| Countries Closest to Japan | 0 | - | 4.92 | 138,870 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,501 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,276 |
| Countries Bordering India | 0 | - | 4.98 | 163,594 |
| Countries Closest to India | 0 | - | 4.97 | 102,979 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,407 |
| History of Russia Quiz | 0 | - | 4.47 | 31,962 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,788 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Word Chain - Germany | 0 | - | 4.31 | 22,633 |
| The Trojan War | 0 | - | 4.83 | 39,822 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,334 |
| Word Chain - Italy | 0 | - | 4.07 | 23,194 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,699 |
| Roman Emperors | 0 | - | 4.95 | 120,464 |
| Famous Nordic People | 0 | - | 4.34 | 20,187 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,982 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,366 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,547 |
| People on Money - England | 0 | - | 4.29 | 16,626 |
| Asian Physical Geography | 0 | - | 4.61 | 35,568 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,814 |
| East Asian Islands on the Map | 0 | - | 4.54 | 33,144 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 71,310 |
| Asian Island Nations | 0 | - | 4.63 | 94,322 |
| Asia's Busiest Airports | 0 | - | 4.69 | 52,936 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 26,048 |
| Arab Spring Countries | 0 | - | 4.51 | 44,113 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,683 |
| Countries that Beat China | 0 | - | 4.85 | 116,190 |
| Closest Countries to North Korea | 0 | - | 4.94 | 122,611 |
| Hindu Countries | 0 | - | 4.86 | 50,335 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,685 |
| Australian Capitals | 0 | - | 4.92 | 62,768 |
