| European Countries by First 2 Letters | 0 | - | 4.95 | 528,170 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,162 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,669 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,760 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,461 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,503 |
| States of Germany | 0 | - | 4.96 | 151,446 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,712 |
| Regions of Italy | 0 | - | 4.92 | 75,358 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,218 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,381 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,813 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,007 |
| Departments of France | 0 | - | 4.93 | 53,502 |
| Famous Germans | 0 | - | 4.50 | 54,897 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,991 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,476 |
| England or Wales? | 0 | - | 4.94 | 45,535 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,910 |
| Official European Union Languages | 0 | - | 4.97 | 237,880 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,446 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,935 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,485 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,530 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,802 |
| The Mafia Quiz | 0 | - | 4.46 | 23,261 |
| History of The Netherlands | 0 | - | 4.46 | 17,379 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,700 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,457 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,124 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,338 |
| Celtic Nations | 0 | - | 4.69 | 46,886 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,746 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,170 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,142 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,029 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,493 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,407 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,068 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,843 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,470 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,670 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,831 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,628 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,908 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,595 |
| Regions of France | 0 | - | 4.78 | 120,165 |
| France A-Z | 0 | - | 4.16 | 38,131 |
| France Immigration by Country | 0 | - | 4.70 | 76,299 |
| German Groups of Things | 0 | - | 4.46 | 38,404 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,232 |
| Germany True or False? | 0 | - | 4.61 | 48,685 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,813 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,785 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,134 |
| Switzerland A-Z | 0 | - | 4.45 | 25,594 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,177 |
| Counties of England | 0 | - | 4.97 | 793,527 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,942 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,534 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,260 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,986 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,700 |
| Federal Subjects of Russia | 0 | - | 4.95 | 145,769 |
| Famous French People | 0 | - | 4.12 | 28,167 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,958 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,354 |
| Famous Nordic People | 0 | - | 4.34 | 20,014 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,573 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,677 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,438 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,831 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,506 |
| People on Money - England | 0 | - | 4.29 | 16,596 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,578 |
| Champions League Winners | 0 | - | 4.92 | 1,002,098 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,213 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,342 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,556 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,960 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,640 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,471 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,890 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,148 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,765 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,707 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,392 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,111 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,455 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,678 |
| European Geography A-Z | 0 | - | 4.29 | 49,149 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,157 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,962 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,346 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,201 |
| Word Chain - France | 0 | - | 4.38 | 42,708 |
| Germany Country Quiz | 0 | - | 4.82 | 157,349 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,739 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,893 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,859 |
| Italy Country Quiz | 0 | - | 4.82 | 122,820 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,946 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,655 |
| Italian Foods | 0 | - | 4.31 | 72,544 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,551 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,185 |
| Canary Islands | 0 | - | 4.61 | 17,450 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,559 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,507 |
| British Spellings | 0 | - | 4.06 | 99,371 |
| British Groups of Things | 0 | - | 4.25 | 82,807 |
| British Acronyms | 0 | - | 4.39 | 45,725 |
| UK Immigration by Country | 0 | - | 4.94 | 140,504 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,005 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,155 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,021 |
| Geography of Scotland | 0 | - | 4.63 | 21,566 |
| Famous Scottish People | 0 | - | 4.22 | 18,366 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,466 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,636 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,384 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,067 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,368 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,223 |
| Slavic Languages | 0 | - | 4.68 | 54,207 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,673 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,569 |
| French History Multiple Choice | 0 | - | 4.55 | 32,969 |
| History of Germany | 0 | - | 4.39 | 52,747 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,283 |
| Name that Greek Letter | 0 | - | 4.93 | 322,814 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,545 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,804 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,389 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,554 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,425 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,963 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,604 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,981 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,627 |
| Malta Country Quiz | 0 | - | 4.81 | 30,969 |
| Africa A-Z | 0 | - | 4.57 | 46,534 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,612 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,716 |
| Famous Russians | 0 | - | 4.16 | 23,786 |
| History of Russia Quiz | 0 | - | 4.49 | 31,861 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,666 |
| Movies Set in France | 0 | - | 4.26 | 13,104 |
| French Inventions | 0 | - | 4.08 | 13,884 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,957 |
| History of Paris | 0 | - | 4.24 | 13,633 |
| Word Chain - Germany | 0 | - | 4.31 | 22,544 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,819 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,096 |
| The Trojan War | 0 | - | 4.83 | 39,608 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,339 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,270 |
| Famous Irish People | 0 | - | 4.05 | 45,922 |
| History of Italy | 0 | - | 4.55 | 31,917 |
| Word Chain - Italy | 0 | - | 4.07 | 23,144 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,546 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,077 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,353 |
| Roman Emperors | 0 | - | 4.95 | 119,483 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,593 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,128 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,311 |
| Name a Valid English City | 0 | - | 4.19 | 16,689 |
| London A-Z | 0 | - | 4.10 | 40,720 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,289 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,401 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,007 |
| Europe Map Quiz | 0 | - | 5.00 | 4,749,924 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,168 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,823 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,106 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,146 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,303 |
| Capitals of French Regions | 0 | - | 4.45 | 16,028 |
| Kings of France Quiz | 0 | - | 4.20 | 32,649 |
| Capitals of German States | 0 | - | 4.74 | 28,908 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,241 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,956 |
| Ancient Greek Words | 0 | - | 4.93 | 111,210 |
| British to American Food Translation | 0 | - | 3.38 | 51,921 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,377 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,299 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,285 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,978 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,539 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,282 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,741 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,211 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,865 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,651 |
| Middle East A-Z | 0 | - | 4.47 | 45,941 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,311,890 |
| Africa Map Quiz | 0 | - | 5.00 | 2,112,469 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,313 |
| Australian Capitals | 0 | - | 4.92 | 62,676 |
