| States of Germany | 0 | - | 4.95 | 153,524 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,359 |
| Famous Germans | 0 | - | 4.50 | 55,566 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,921 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,520 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,214 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,467 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,465 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,965 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,449 |
| Regions of Italy | 0 | - | 4.92 | 76,409 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,511 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,637 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,478 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,508 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,951 |
| Departments of France | 0 | - | 4.93 | 54,604 |
| German Groups of Things | 0 | - | 4.46 | 38,549 |
| Germany True or False? | 0 | - | 4.61 | 48,918 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,902 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,636 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,365 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,398 |
| Official European Union Languages | 0 | - | 4.97 | 239,076 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,234 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,502 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,204 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,148 |
| Famous French People | 0 | - | 4.07 | 35,912 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,268 |
| The Mafia Quiz | 0 | - | 4.46 | 23,391 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,937 |
| British Acronyms | 0 | - | 4.40 | 45,869 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,990 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Celtic Nations | 0 | - | 4.69 | 47,008 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,095 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,495 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,881 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,435 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,104 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,480 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,282 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,098 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,350 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,936 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,963 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,709 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,627 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,818 |
| Regions of France | 0 | - | 4.70 | 121,406 |
| France A-Z | 0 | - | 4.16 | 38,282 |
| France Immigration by Country | 0 | - | 4.70 | 76,717 |
| Capitals of German States | 0 | - | 4.74 | 29,003 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,418 |
| History of Germany | 0 | - | 4.39 | 52,912 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,193 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,539 |
| Counties of England | 0 | - | 4.97 | 799,777 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,507 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,715 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,756 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,826 |
| Monarchies of Europe | 0 | - | 4.90 | 98,440 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,269 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,964 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,318 |
| Word Chain - Germany | 0 | - | 4.31 | 22,638 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,625 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,444 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,232 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,344 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,549 |
| People on Money - England | 0 | - | 4.29 | 16,627 |
| Champions League Winners | 0 | - | 4.92 | 1,010,832 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,768 |
| Monarchies of Asia | 0 | - | 4.97 | 71,289 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,073 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,629 |
| Kings of France Quiz | 0 | - | 4.20 | 32,841 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,246 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,468 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,970 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,345 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,691 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,542 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,227 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,974 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,605 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,083 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,211 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,493 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,423 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,346 |
| European Geography A-Z | 0 | - | 4.29 | 49,386 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,671 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,812 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,286 |
| Word Chain - France | 0 | - | 4.38 | 42,866 |
| Germany Country Quiz | 0 | - | 4.83 | 158,311 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,733 |
| German History A-Z | 0 | - | 4.49 | 24,681 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,796 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,700 |
| Italian Foods | 0 | - | 4.30 | 73,005 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,174 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,339 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,371 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,864 |
| British Spellings | 0 | - | 4.06 | 99,527 |
| British Groups of Things | 0 | - | 4.25 | 82,930 |
| UK Immigration by Country | 0 | - | 4.94 | 141,244 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,063 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,336 |
| British Monopoly Board | 0 | - | 4.52 | 41,209 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,147 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| Name the English Monarchs | 0 | - | 4.91 | 504,477 |
| Famous Scottish People | 0 | - | 4.22 | 18,418 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,212 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,544 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,477 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,219 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,712 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,606 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,352 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,667 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,951 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,820 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,685 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,685 |
| Slavic Languages | 0 | - | 4.68 | 54,513 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,905 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,648 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| French History Multiple Choice | 0 | - | 4.55 | 33,145 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,517 |
| Geography of Germany | 0 | - | 4.35 | 17,216 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,585 |
| Name that Greek Letter | 0 | - | 4.93 | 324,325 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,682 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,529 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,676 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,582 |
| Switzerland A-Z | 0 | - | 4.45 | 25,700 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,799 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,056 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,900 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,396 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,047 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,893 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,051 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,445 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,794 |
| Russian History A-Z | 0 | - | 4.35 | 31,914 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,429 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,184 |
| The Trojan War | 0 | - | 4.83 | 39,844 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,395 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,710 |
| Famous Irish People | 0 | - | 4.05 | 46,029 |
| History of Italy | 0 | - | 4.55 | 32,082 |
| Word Chain - Italy | 0 | - | 4.07 | 23,198 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,050 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,954 |
| Roman Emperors | 0 | - | 4.95 | 120,524 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Famous Nordic People | 0 | - | 4.34 | 20,197 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,369 |
| Name a Valid English City | 0 | - | 4.19 | 16,764 |
| British Geography A-Z | 0 | - | 4.42 | 19,573 |
| London A-Z | 0 | - | 4.10 | 40,834 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,541 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,902 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,748 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,288 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,321 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,416 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,295 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,387 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,044 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,342 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,319 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,077 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,579 |
