| States of Germany | 0 | - | 4.96 | 150,970 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,314 |
| Famous Germans | 0 | - | 4.50 | 54,809 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,551 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,178 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,723 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,596 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,549 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,640 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,888 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,261 |
| Regions of Italy | 0 | - | 4.92 | 75,126 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,070 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,098 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,675 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,622 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,977 |
| Departments of France | 0 | - | 4.93 | 53,206 |
| German Groups of Things | 0 | - | 4.46 | 38,372 |
| Germany True or False? | 0 | - | 4.61 | 48,646 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,836 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,423 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,136 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,828 |
| Official European Union Languages | 0 | - | 4.97 | 237,577 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,261 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,383 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,408 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,729 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,717 |
| The Mafia Quiz | 0 | - | 4.46 | 23,242 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,655 |
| British Acronyms | 0 | - | 4.39 | 45,693 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,312 |
| Celtic Nations | 0 | - | 4.69 | 46,868 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,657 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,110 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,091 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,965 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,428 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,278 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,017 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,796 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,427 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,580 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,785 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,070 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,122 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,292 |
| Regions of France | 0 | - | 4.77 | 119,868 |
| France A-Z | 0 | - | 4.16 | 38,107 |
| France Immigration by Country | 0 | - | 4.72 | 76,157 |
| Capitals of German States | 0 | - | 4.74 | 28,886 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,182 |
| History of Germany | 0 | - | 4.39 | 52,708 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,698 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,018 |
| Counties of England | 0 | - | 4.97 | 792,111 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,806 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,492 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,267 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,763 |
| Monarchies of Europe | 0 | - | 4.90 | 97,657 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,099 |
| Famous French People | 0 | - | 4.12 | 28,122 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,695 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,099 |
| Word Chain - Germany | 0 | - | 4.31 | 22,519 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,564 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,108 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,296 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,576 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,495 |
| People on Money - England | 0 | - | 4.29 | 16,587 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,490 |
| Champions League Winners | 0 | - | 4.92 | 1,000,246 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,163 |
| Monarchies of Asia | 0 | - | 4.97 | 70,802 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,602 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| Kings of France Quiz | 0 | - | 4.20 | 32,622 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,805 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,532 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,411 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,663 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,416 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,842 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,081 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,707 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,663 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,350 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,075 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,418 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,641 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,569 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,443 |
| European Geography A-Z | 0 | - | 4.29 | 49,097 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,632 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,636 |
| Word Chain - France | 0 | - | 4.38 | 42,669 |
| Germany Country Quiz | 0 | - | 4.82 | 157,107 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,500 |
| German History A-Z | 0 | - | 4.49 | 24,502 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,859 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,832 |
| Italy Country Quiz | 0 | - | 4.82 | 122,617 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,770 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,403 |
| Italian Foods | 0 | - | 4.31 | 72,420 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,363 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,989 |
| Canary Islands | 0 | - | 4.61 | 17,432 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,378 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,338 |
| British Spellings | 0 | - | 4.07 | 99,343 |
| British Groups of Things | 0 | - | 4.25 | 82,758 |
| UK Immigration by Country | 0 | - | 4.94 | 140,049 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,989 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,832 |
| British Monopoly Board | 0 | - | 4.52 | 41,090 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,774 |
| Geography of Scotland | 0 | - | 4.63 | 21,535 |
| Name the English Monarchs | 0 | - | 4.92 | 499,860 |
| Famous Scottish People | 0 | - | 4.22 | 18,351 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,153 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,665 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,231 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,990 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,546 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,691 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,499 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,624 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,246 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,768 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,292 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,086 |
| Slavic Languages | 0 | - | 4.68 | 54,139 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,618 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,516 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,585 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,995 |
| French History Multiple Choice | 0 | - | 4.55 | 32,934 |
| Geography of Germany | 0 | - | 4.35 | 17,128 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,273 |
| Name that Greek Letter | 0 | - | 4.93 | 322,436 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,514 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,327 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,527 |
| Switzerland A-Z | 0 | - | 4.45 | 25,566 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,542 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,962 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,565 |
| Malta Country Quiz | 0 | - | 4.81 | 30,918 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,301 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,184 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,039 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,676 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,529 |
| History of Russia Quiz | 0 | - | 4.49 | 31,835 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,629 |
| Movies Set in France | 0 | - | 4.26 | 13,095 |
| French Inventions | 0 | - | 4.08 | 13,874 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,837 |
| History of Paris | 0 | - | 4.24 | 13,628 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,066 |
| The Trojan War | 0 | - | 4.83 | 39,547 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,097 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,989 |
| Famous Irish People | 0 | - | 4.05 | 45,901 |
| History of Italy | 0 | - | 4.55 | 31,889 |
| Word Chain - Italy | 0 | - | 4.07 | 23,131 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,409 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,065 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,251 |
| Roman Emperors | 0 | - | 4.95 | 119,143 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,551 |
| Famous Nordic People | 0 | - | 4.34 | 19,969 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,080 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,290 |
| Name a Valid English City | 0 | - | 4.19 | 16,667 |
| British Geography A-Z | 0 | - | 4.41 | 19,463 |
| London A-Z | 0 | - | 4.10 | 40,692 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,134 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,071 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,001 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,927 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,756 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,955 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,107 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,750 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,057 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,099 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,833 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,854 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,207 |
| Capitals of French Regions | 0 | - | 4.45 | 16,014 |
