| European Countries by First 2 Letters | 0 | - | 4.95 | 533,193 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,158 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,162 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,183 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,540 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,219 |
| States of Germany | 0 | - | 4.95 | 154,999 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,838 |
| Regions of Italy | 0 | - | 4.92 | 77,298 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,942 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,646 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,917 |
| Departments of France | 0 | - | 4.93 | 55,442 |
| Famous Germans | 0 | - | 4.50 | 55,886 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,602 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,569 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,787 |
| England or Wales? | 0 | - | 4.94 | 46,077 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,880 |
| Official European Union Languages | 0 | - | 4.97 | 240,418 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,860 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,495 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,488 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,808 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,403 |
| Famous French People | 0 | - | 4.05 | 36,177 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,290 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| History of The Netherlands | 0 | - | 4.46 | 17,576 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,117 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,230 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,433 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,862 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,401 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,926 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,363 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,898 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,343 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,942 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,209 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,842 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,604 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,288 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,643 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,684 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,165 |
| Regions of France | 0 | - | 4.70 | 122,459 |
| France A-Z | 0 | - | 4.16 | 38,367 |
| France Immigration by Country | 0 | - | 4.70 | 77,028 |
| German Groups of Things | 0 | - | 4.47 | 38,679 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,768 |
| Germany True or False? | 0 | - | 4.61 | 49,079 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,525 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,964 |
| Switzerland A-Z | 0 | - | 4.45 | 25,797 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,500 |
| Counties of England | 0 | - | 4.97 | 804,565 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,984 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,858 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,892 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,539 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,007 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,927 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,998 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,846 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,016 |
| Famous Nordic People | 0 | - | 4.34 | 20,353 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,916 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,672 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,333 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| People on Money - England | 0 | - | 4.29 | 20,662 |
| Champions League Winners | 0 | - | 4.92 | 1,018,384 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,140 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,837 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,449 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,876 |
| European Geography By Letter - E | 0 | - | 4.23 | 119,133 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,754 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,420 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,219 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,766 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,410 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,774 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,719 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,025 |
| European Geography A-Z | 0 | - | 4.29 | 49,530 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,443 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,404 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,354 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,003 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,028 |
| Word Chain - France | 0 | - | 4.38 | 42,968 |
| Germany Country Quiz | 0 | - | 4.82 | 159,110 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,281 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,466 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,264 |
| Italian Foods | 0 | - | 4.30 | 73,412 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,645 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,069 |
| Canary Islands | 0 | - | 4.62 | 17,550 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,155 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,176 |
| British Spellings | 0 | - | 4.06 | 99,634 |
| British Groups of Things | 0 | - | 4.26 | 83,046 |
| British Acronyms | 0 | - | 4.40 | 45,983 |
| UK Immigration by Country | 0 | - | 4.94 | 141,932 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,133 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,318 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,084 |
| Geography of Scotland | 0 | - | 4.63 | 21,829 |
| Famous Scottish People | 0 | - | 4.22 | 18,444 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,543 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,474 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,380 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,936 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,080 |
| Slavic Languages | 0 | - | 4.67 | 54,793 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,308 |
| French History Multiple Choice | 0 | - | 4.55 | 33,281 |
| History of Germany | 0 | - | 4.39 | 53,008 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,192 |
| Name that Greek Letter | 0 | - | 4.93 | 325,362 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,902 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,833 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,669 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,393 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,545 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,051 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,039 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,116 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,164 |
| Malta Country Quiz | 0 | - | 4.81 | 31,274 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,039 |
| Famous Russians | 0 | - | 4.16 | 23,933 |
| History of Russia Quiz | 0 | - | 4.47 | 32,030 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,908 |
| Russian History A-Z | 0 | - | 4.35 | 32,321 |
| Movies Set in France | 0 | - | 4.26 | 13,161 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,833 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Word Chain - Germany | 0 | - | 4.31 | 22,702 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,681 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,263 |
| The Trojan War | 0 | - | 4.83 | 40,102 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,295 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,017 |
| Famous Irish People | 0 | - | 4.05 | 46,083 |
| History of Italy | 0 | - | 4.55 | 32,189 |
| Word Chain - Italy | 0 | - | 4.07 | 23,232 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,548 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,186 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,711 |
| Roman Emperors | 0 | - | 4.95 | 121,478 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,857 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,477 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,425 |
| Name a Valid English City | 0 | - | 4.19 | 16,843 |
| London A-Z | 0 | - | 4.10 | 40,914 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,101 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,085 |
| Africa A-Z | 0 | - | 4.57 | 46,806 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,721 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,612 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,417 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,583 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,255 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,524 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,477 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,631 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,799 |
| Capitals of French Regions | 0 | - | 4.45 | 16,216 |
| Kings of France Quiz | 0 | - | 4.22 | 32,975 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,600 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,604 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,598 |
| Ancient Greek Words | 0 | - | 4.93 | 112,711 |
| British to American Food Translation | 0 | - | 3.38 | 52,066 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,608 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,832 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,027 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,544 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,163 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,729 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,291 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,736 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,402 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,403 |
| Middle East A-Z | 0 | - | 4.47 | 46,278 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,328,024 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,609 |
| Australian Capitals | 0 | - | 4.92 | 62,865 |
| Canada A-Z | 0 | - | 4.73 | 33,000 |
