| States of Germany | 0 | - | 4.94 | 121,195 |
| Germany Immigration by Country | 0 | - | 4.90 | 68,758 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 453,364 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,315 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,678 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 162,851 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,025 |
| Counties of Ireland | 0 | - | 4.89 | 156,904 |
| Regions of Italy | 0 | - | 4.88 | 59,366 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,353 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,260 |
| England or Wales? | 0 | - | 4.93 | 39,775 |
| German Groups of Things | 0 | - | 4.43 | 35,731 |
| Germany True or False? | 0 | - | 4.64 | 44,035 |
| Official European Union Languages | 0 | - | 4.98 | 198,513 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,742 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 381,439 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 578,877 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,217 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,707 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,892 |
| Famous Germans | 0 | - | 4.39 | 35,074 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,556 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,791 |
| Name that Greek Letter | 0 | - | 4.94 | 293,810 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,680 |
| Provinces of the Netherlands | 0 | - | 4.61 | 32,898 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,860 |
| British Acronyms | 0 | - | 4.42 | 43,160 |
| Counties of England | 0 | - | 4.96 | 681,613 |
| Foods in a Full English Breakfast | 0 | - | 4.43 | 72,637 |
| Top Asian Languages on a Map | 0 | - | 4.93 | 59,787 |
| Top African Languages on a Map | 0 | - | 4.91 | 50,979 |
| Celtic Nations | 0 | - | 4.76 | 44,488 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 183,091 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 78,911 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 282,814 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,044 |
| Regions of France | 0 | - | 4.59 | 98,768 |
| France Immigration by Country | 0 | - | 4.80 | 68,203 |
| Capitals of German States | 0 | - | 4.67 | 26,954 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,291 |
| History of Germany Quiz | 0 | - | 4.35 | 39,937 |
| Largest Islands of Greece | 0 | - | 4.56 | 38,794 |
| UK Cities Map Quiz | 0 | - | 4.94 | 430,293 |
| Parts of the United Kingdom | 0 | - | 4.88 | 82,852 |
| Counties of England Map Quiz | 0 | - | 4.97 | 284,923 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 262,708 |
| Champions League Winners | 0 | - | 4.90 | 836,171 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,591 |
| Category Elimination - European Geography #3 | 0 | - | 4.84 | 64,335 |
| Federal Subjects of Russia | 0 | - | 4.95 | 109,582 |
| Regions of France Map Quiz | 0 | - | 4.96 | 126,137 |
| States of Germany Map Quiz | 0 | - | 4.91 | 119,326 |
| Word Chain - Germany | 0 | - | 4.29 | 20,970 |
| Sweden Immigration by Country | 0 | - | 4.66 | 41,855 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,151 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,120 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,530 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,386 |
| History of The Netherlands | 0 | - | 4.42 | 15,618 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 85,162 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 167,831 |
| Canary Islands | 0 | - | 4.60 | 16,485 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 91,717 |
| Switzerland Immigration by Country | 0 | - | 4.79 | 19,531 |
| British Spellings Quiz | 0 | - | 4.04 | 94,024 |
| British Groups of Things | 0 | - | 4.26 | 79,908 |
| UK Immigration by Country | 0 | - | 4.95 | 123,932 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,635 |
| United Kingdom Country Quiz | 0 | - | 4.93 | 116,847 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,115 |
| Geography of Scotland | 0 | - | 4.61 | 19,401 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,127 |
| Countries with the Most Arabic Speakers | 0 | - | 4.91 | 69,724 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 197,853 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 243,310 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 140,792 |
| France Cities Map Quiz | 0 | - | 4.95 | 146,591 |
| Word Chain - France | 0 | - | 4.38 | 39,730 |
| Germany Country Quiz | 0 | - | 4.83 | 138,682 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 104,921 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,068 |
| Famous Italians | 0 | - | 4.40 | 65,390 |
| Italy Country Quiz | 0 | - | 4.81 | 107,423 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 132,082 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 125,826 |
| Italian Foods | 0 | - | 4.25 | 63,337 |
| The Mafia Quiz | 0 | - | 4.47 | 21,400 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,579 |
| Spanish Immigration by Country | 0 | - | 4.58 | 51,463 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,448 |
| Languages of Spain | 0 | - | 4.34 | 21,169 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,429 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,251 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,114 |
| Word Scramble - European Countries | 0 | - | 4.72 | 112,739 |
| Top 20 Football Clubs in Europe | 0 | - | 4.52 | 82,979 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,326 |
| Slavic Languages | 0 | - | 4.58 | 48,364 |
| Countries With the Most Russian Speakers | 0 | - | 4.94 | 55,273 |
| Andorra Country Quiz | 0 | - | 4.87 | 27,528 |
| Famous Dutch and Belgian People | 0 | - | 4.50 | 16,703 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 21,902 |
| Geography of Germany | 0 | - | 4.36 | 15,443 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,220 |
| Roman Emperors | 0 | - | 4.95 | 94,565 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 31,915 |
| Famous Nordic People | 0 | - | 4.40 | 10,645 |
| Famous Spaniards Quiz | 0 | - | 4.19 | 10,907 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,902 |
| Word Chain - United Kingdom | 0 | - | 4.03 | 27,831 |
| The British Royal Family - Modern Times | 0 | - | 4.11 | 20,541 |
| People on Money - England | 0 | - | 4.33 | 15,887 |
| Name a Valid English City | 0 | - | 4.16 | 15,227 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 252,420 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 242,655 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,798 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,725 |
| Famous French People | 0 | - | 4.15 | 24,055 |
| Movies Set in France | 0 | - | 4.23 | 12,469 |
| French Inventions | 0 | - | 4.08 | 13,311 |
| Country Quiz on a Map - France | 0 | - | 4.97 | 37,873 |
| History of Paris | 0 | - | 4.20 | 12,601 |
| The Trojan War | 0 | - | 4.81 | 35,587 |
| Geography of Ancient Greece | 0 | - | 4.76 | 29,570 |
| Word Chain - Italy | 0 | - | 4.08 | 21,892 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,594 |
| Embarrassing Chapters in Italian History | 0 | - | 4.20 | 11,064 |
| Switzerland A-Z | 0 | - | 4.40 | 18,297 |
| British to American Food Translation. | 0 | - | 3.47 | 50,339 |
| Fictional Characters from Great Britain | 0 | - | 4.10 | 31,146 |
| Beatles Songs Quiz | 0 | - | 4.94 | 203,901 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 271,430 |
| Famous Scottish People | 0 | - | 4.19 | 17,470 |
| European Geography By Letter - A | 0 | - | 4.55 | 123,510 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 102,907 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,317 |
| European Geography By Letter - D | 0 | - | 4.52 | 98,914 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,352 |
| European Geography By Letter - M | 0 | - | 4.55 | 113,826 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,008 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,011 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,849 |
| Europe Map Quiz | 0 | - | 5.00 | 4,248,531 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,677 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,139 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,856 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,565 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,463 |
| European Geography A-Z | 0 | - | 4.43 | 44,985 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.76 | 60,472 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,421 |
| Famous Swiss and Austrian People | 0 | - | 4.36 | 13,611 |
| France A-Z | 0 | - | 4.16 | 25,569 |
| German Loan Words | 0 | - | 4.30 | 128,951 |
| All Bundesliga Teams Ever | 0 | - | 4.43 | 37,771 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,492 |
| Ancient Greek Words | 0 | - | 4.90 | 96,023 |
| Capitals of Italian Regions | 0 | - | 4.52 | 25,984 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 395,811 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 47,913 |
| Monaco Country Quiz | 0 | - | 4.45 | 37,178 |
| Netherlands Country Quiz | 0 | - | 4.56 | 72,230 |
| Nordic Cities Map Quiz | 0 | - | 4.72 | 84,730 |
| The Vikings! | 0 | - | 4.44 | 26,997 |
| Portugal Country Quiz | 0 | - | 4.67 | 64,120 |
| The Portuguese Empire | 0 | - | 4.54 | 11,279 |
| Spain Country Quiz | 0 | - | 4.44 | 113,518 |
| Switzerland Country Quiz | 0 | - | 4.53 | 56,533 |
| British Words Quiz #2 | 0 | - | 4.02 | 106,546 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.50 | 36,298 |
| Biggest British Empire Countries | 0 | - | 4.66 | 78,329 |
| Which Country of the United Kingdom? | 0 | - | 4.59 | 34,835 |
| James Bond Movies | 0 | - | 4.64 | 142,588 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.87 | 26,282 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,454 |
| Countries the UK Declared War On | 0 | - | 4.57 | 110,773 |
| Counties of Wales | 0 | - | 4.60 | 33,119 |
| Champions League Top 4 | 0 | - | 4.76 | 101,651 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,332,953 |
| Asia Map Quiz | 0 | - | 4.99 | 772,138 |
| Africa Map Quiz | 0 | - | 5.00 | 1,922,918 |
| Oceania Map Quiz | 0 | - | 4.97 | 561,500 |
| Australian Capitals | 0 | - | 4.90 | 52,913 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.77 | 56,256 |
| European Physical Geography | 0 | - | 4.19 | 31,786 |
| History of Russia Quiz | 0 | - | 4.48 | 29,716 |
| Geography of Russia | 0 | - | 4.54 | 20,059 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,459 |
| History of Austria | 0 | - | 4.68 | 16,260 |
| Austria Country Quiz | 0 | - | 4.55 | 53,598 |
| Belgium Country Quiz | 0 | - | 4.66 | 63,798 |
| France Country Quiz | 0 | - | 4.76 | 119,726 |
| Biggest French Empire Countries | 0 | - | 4.45 | 51,050 |
| Geography of the French Empire | 0 | - | 4.50 | 24,969 |
| The French Revolution | 0 | - | 4.44 | 21,778 |
| Tour de France Winners | 0 | - | 4.21 | 12,756 |
| History of France Quiz | 0 | - | 4.55 | 39,449 |
| Bundesliga Champions | 0 | - | 4.18 | 43,374 |
