| Netherlands Immigration by Country | 0 | - | 4.93 | 52,474 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,133 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,816 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,438 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,848 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,394 |
| Word Chain - France | 0 | - | 4.38 | 42,857 |
| States of Germany | 0 | - | 4.95 | 153,403 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,325 |
| Regions of Italy | 0 | - | 4.92 | 76,341 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,566 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,454 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,145 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,570 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,835 |
| Departments of France | 0 | - | 4.93 | 54,551 |
| German Groups of Things | 0 | - | 4.46 | 38,534 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,627 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,526 |
| England or Wales? | 0 | - | 4.94 | 45,820 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,371 |
| Official European Union Languages | 0 | - | 4.97 | 239,019 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,194 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,367 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,934 |
| Word Chain - Germany | 0 | - | 4.31 | 22,633 |
| Word Chain - Italy | 0 | - | 4.07 | 23,194 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,335 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,366 |
| History of The Netherlands | 0 | - | 4.46 | 17,493 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,929 |
| British Groups of Things | 0 | - | 4.25 | 82,918 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,733 |
| Celtic Nations | 0 | - | 4.69 | 47,006 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,374 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,035 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,332 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,311 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,670 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,578 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,563 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,568 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,094 |
| Regions of France | 0 | - | 4.70 | 121,357 |
| France Immigration by Country | 0 | - | 4.70 | 76,706 |
| Famous Germans | 0 | - | 4.50 | 55,555 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,508 |
| Germany True or False? | 0 | - | 4.61 | 48,909 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,234 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,180 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,881 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,358 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,052 |
| Counties of England | 0 | - | 4.97 | 799,450 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,486 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,705 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,512 |
| Country Chain | 0 | - | 4.96 | 217,728 |
| Capital Cities Chain | 0 | - | 4.84 | 83,011 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,324 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,009 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,439 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,299 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,187 |
| Word Chain - Russia | 0 | - | 4.33 | 15,773 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,924 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,279 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,354 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,206 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,308 |
| Name a Valid English City | 0 | - | 4.19 | 16,758 |
| Champions League Winners | 0 | - | 4.92 | 1,010,490 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,419 |
| Word Chain - Australia | 0 | - | 4.38 | 38,177 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,601 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,687 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,230 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,189 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,765 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,349 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,947 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,765 |
| European Geographic Groups of Four | 0 | - | 4.57 | 14,189 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,326 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,797 |
| Famous French People | 0 | - | 4.07 | 35,897 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,240 |
| Germany Country Quiz | 0 | - | 4.83 | 158,262 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,703 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,095 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,954 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,748 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,666 |
| Italian Foods | 0 | - | 4.30 | 72,992 |
| The Mafia Quiz | 0 | - | 4.46 | 23,384 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,154 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,305 |
| Canary Islands | 0 | - | 4.62 | 17,498 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,315 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,844 |
| British Spellings | 0 | - | 4.06 | 99,517 |
| British Acronyms | 0 | - | 4.40 | 45,863 |
| UK Immigration by Country | 0 | - | 4.94 | 141,213 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,289 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,077 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,977 |
| Geography of Scotland | 0 | - | 4.63 | 21,672 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,137 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,416 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,156 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,663 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,660 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,745 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,675 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,676 |
| Slavic Languages | 0 | - | 4.68 | 54,496 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,889 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,648 |
| France A-Z | 0 | - | 4.16 | 38,276 |
| French History Multiple Choice | 0 | - | 4.55 | 33,138 |
| History of Germany | 0 | - | 4.39 | 52,909 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,385 |
| Name that Greek Letter | 0 | - | 4.93 | 324,264 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,676 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,523 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,671 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,107 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,548 |
| Switzerland A-Z | 0 | - | 4.45 | 25,698 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,787 |
| UK General Knowledge Multiple Choice #1 | 0 | - | 4.24 | 20,829 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,894 |
| Malta Country Quiz | 0 | - | 4.81 | 31,132 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,064 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 276,009 |
| Word Chain - Africa | 0 | - | 4.47 | 31,659 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,405 |
| 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 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,402 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,241 |
| The Trojan War | 0 | - | 4.83 | 39,817 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,329 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,622 |
| History of Italy | 0 | - | 4.55 | 32,068 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,017 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,133 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,672 |
| Roman Emperors | 0 | - | 4.95 | 120,458 |
| Famous Nordic People | 0 | - | 4.34 | 20,187 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,437 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,311 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,547 |
| People on Money - England | 0 | - | 4.29 | 16,626 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,810 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,684 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,281 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 94,162 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,048 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,449 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,843 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,394 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,057 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,402 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,245 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,056 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,321 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,890 |
| Europe Map Quiz | 0 | - | 5.00 | 4,773,362 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,929 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Kings of France Quiz | 0 | - | 4.20 | 32,832 |
| Capitals of German States | 0 | - | 4.74 | 28,995 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,416 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,100 |
| Ancient Greek Words | 0 | - | 4.93 | 111,986 |
| British to American Food Translation | 0 | - | 3.38 | 51,991 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,469 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,498 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,226 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,159 |
| Famous Scottish People | 0 | - | 4.22 | 18,416 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,565 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,624 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,299 |
| Famous People from Africa | 0 | - | 4.45 | 10,971 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,017 |
| Four Letter African Geography | 0 | - | 4.67 | 19,515 |
| Word Chain - The Bible | 0 | - | 4.48 | 50,842 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,966 |
| Australian Capitals | 0 | - | 4.92 | 62,766 |
| European Physical Geography | 0 | - | 4.26 | 33,545 |
| Word Scramble - European Cities | 0 | - | 3.84 | 18,937 |
| Geography of Russia | 0 | - | 4.57 | 21,557 |
