| European Countries by First 2 Letters | 0 | - | 4.95 | 531,042 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,590 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,767 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,026 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,110 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,940 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,430 |
| Official European Union Languages | 0 | - | 4.97 | 239,148 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,265 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,619 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,456 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,302 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,160 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,946 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,976 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,411 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,213 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,004 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,454 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,402 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,056 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,349 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,323 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,746 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,734 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,023 |
| German Groups of Things | 0 | - | 4.46 | 38,559 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,536 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,261 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,535 |
| Champions League Winners | 0 | - | 4.92 | 1,011,239 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,372 |
| Celtic Nations | 0 | - | 4.69 | 47,022 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,235 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,492 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,561 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,489 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,337 |
| States of Germany | 0 | - | 4.95 | 153,627 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,377 |
| Regions of Italy | 0 | - | 4.92 | 76,450 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,527 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,713 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,499 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,774 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,694 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,446 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,043 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,782 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,644 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,697 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,555 |
| European Geographic Groups of Four | 0 | - | 4.58 | 17,522 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,870 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,281 |
| Departments of France | 0 | - | 4.93 | 54,649 |
| Word Chain - France | 0 | - | 4.38 | 42,868 |
| Italian Foods | 0 | - | 4.30 | 73,029 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,646 |
| British Groups of Things | 0 | - | 4.25 | 82,939 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,067 |
| England or Wales? | 0 | - | 4.94 | 45,836 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,282 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,519 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,251 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,368 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,750 |
| Name a Valid African Country | 0 | - | 4.98 | 154,548 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,037 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,993 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,647 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,670 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,680 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,971 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,913 |
| Slavic Languages | 0 | - | 4.68 | 54,528 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,182 |
| The Trojan War | 0 | - | 4.83 | 39,867 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,724 |
| Name that Greek Letter | 0 | - | 4.93 | 324,382 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,446 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,685 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,180 |
| Roman Emperors | 0 | - | 4.95 | 120,604 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,611 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,542 |
| Most Common First Names in Spain | 0 | - | 4.27 | 49,826 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,839 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,058 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,907 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,979 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,186 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,291 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,174 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,290 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,481 |
| History of Russia Quiz | 0 | - | 4.47 | 31,972 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,799 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,289 |
| Word Chain - Germany | 0 | - | 4.31 | 22,643 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,347 |
| Ancient Greek Words | 0 | - | 4.93 | 112,068 |
| History of Italy | 0 | - | 4.55 | 32,088 |
| Word Chain - Italy | 0 | - | 4.07 | 23,200 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,073 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,448 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,043 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,330 |
| Geography of Spain | 0 | - | 4.59 | 22,129 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,370 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,382 |
| Name a Valid English City | 0 | - | 4.19 | 16,768 |
| Imagine Lyrics | 0 | - | 4.53 | 43,447 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,894 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,117 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,520 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,901 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,447 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,118 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,507 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,294 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,112 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,364 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,949 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,191 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,973 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,588 |
| Capitals of French Regions | 0 | - | 4.45 | 16,129 |
| Regions of France | 0 | - | 4.70 | 121,468 |
| France Immigration by Country | 0 | - | 4.70 | 76,739 |
| Famous Germans | 0 | - | 4.50 | 55,585 |
| Capitals of German States | 0 | - | 4.74 | 29,008 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,429 |
| Germany True or False? | 0 | - | 4.61 | 48,924 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,230 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,930 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,453 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,334 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,568 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,367 |
| British to American Food Translation | 0 | - | 3.38 | 52,000 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,504 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,745 |
| Beatles Lyrics First Names | 0 | - | 4.34 | 39,868 |
| Elton John Quiz | 0 | - | 4.49 | 18,500 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,588 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,645 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,313 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,960 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,024 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,790 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 838,874 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,275 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,098 |
| Australian Capitals | 0 | - | 4.92 | 62,780 |
| Word Chain - Australia | 0 | - | 4.38 | 38,192 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,813 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,745 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,631 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,217 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,281 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,357 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,704 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,557 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,239 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,986 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,612 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,094 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,220 |
| European Physical Geography | 0 | - | 4.26 | 33,559 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,499 |
| European Geography A-Z | 0 | - | 4.29 | 49,393 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,040 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Austria... or Australia? | 0 | - | 4.68 | 104,579 |
| Famous French People | 0 | - | 4.07 | 35,931 |
| French Foods | 0 | - | 4.00 | 27,738 |
| Geography of the French Empire | 0 | - | 4.45 | 27,177 |
| The French Revolution | 0 | - | 4.47 | 24,083 |
| France Multiple Choice | 0 | - | 4.39 | 40,787 |
| History of France | 0 | - | 4.61 | 57,364 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,125 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,975 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,015 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,528 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,484 |
| The Mafia Quiz | 0 | - | 4.46 | 23,395 |
| Byzantine History | 0 | - | 4.91 | 28,952 |
| Byzantine Emperors | 0 | - | 4.92 | 14,430 |
| History of The Netherlands | 0 | - | 4.46 | 17,503 |
| The Vikings! | 0 | - | 4.46 | 28,378 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,254 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| Canary Islands | 0 | - | 4.62 | 17,502 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,278 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,877 |
| American to British Word Translation | 0 | - | 4.14 | 139,420 |
| British Spellings | 0 | - | 4.06 | 99,532 |
