| European Countries by First 2 Letters | 0 | - | 4.95 | 531,447 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,886 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,999 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,223 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,577 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,987 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,507 |
| Official European Union Languages | 0 | - | 4.97 | 239,314 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,352 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,958 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,529 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,386 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,191 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,981 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,952 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,650 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,449 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,632 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,462 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,430 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,086 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,382 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,353 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,834 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,953 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,527 |
| German Groups of Things | 0 | - | 4.47 | 38,577 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,580 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,304 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,591 |
| Champions League Winners | 0 | - | 4.92 | 1,012,277 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,455 |
| Celtic Nations | 0 | - | 4.69 | 47,048 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,409 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,551 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,967 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,614 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,577 |
| States of Germany | 0 | - | 4.95 | 153,834 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,471 |
| Regions of Italy | 0 | - | 4.92 | 76,553 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,596 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,872 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,543 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,792 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,806 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,469 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,179 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,812 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,668 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,731 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,694 |
| European Geographic Groups of Four | 0 | - | 4.60 | 19,185 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,283 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,467 |
| Departments of France | 0 | - | 4.93 | 54,753 |
| Word Chain - France | 0 | - | 4.38 | 42,888 |
| Italian Foods | 0 | - | 4.30 | 73,084 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,675 |
| British Groups of Things | 0 | - | 4.25 | 82,959 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,079 |
| England or Wales? | 0 | - | 4.94 | 45,870 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,472 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,650 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,362 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,453 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,841 |
| Name a Valid African Country | 0 | - | 4.98 | 154,669 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,224 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,216 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,742 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,687 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,695 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,099 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,129 |
| Slavic Languages | 0 | - | 4.68 | 54,572 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,308 |
| The Trojan War | 0 | - | 4.83 | 39,910 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,238 |
| Name that Greek Letter | 0 | - | 4.93 | 324,520 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,568 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,696 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,415 |
| Roman Emperors | 0 | - | 4.95 | 120,745 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,678 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,573 |
| Most Common First Names in Spain | 0 | - | 4.31 | 54,022 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,879 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,065 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,979 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,994 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,230 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,322 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,264 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,315 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,571 |
| History of Russia Quiz | 0 | - | 4.47 | 31,977 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,821 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,305 |
| Word Chain - Germany | 0 | - | 4.31 | 22,653 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,695 |
| Ancient Greek Words | 0 | - | 4.93 | 112,162 |
| History of Italy | 0 | - | 4.55 | 32,099 |
| Word Chain - Italy | 0 | - | 4.07 | 23,201 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,142 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,763 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,459 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,106 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,362 |
| Geography of Spain | 0 | - | 4.59 | 22,140 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,377 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,412 |
| Name a Valid English City | 0 | - | 4.19 | 16,776 |
| Imagine Lyrics | 0 | - | 4.53 | 43,483 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,943 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,397 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,776 |
| European Geography By Letter - C | 0 | - | 4.46 | 120,272 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,760 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,335 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,818 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,701 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,239 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,472 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,112 |
| Europe Map Quiz | 0 | - | 5.00 | 4,778,183 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,087 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,384 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,615 |
| Capitals of French Regions | 0 | - | 4.45 | 16,144 |
| Regions of France | 0 | - | 4.70 | 121,611 |
| France Immigration by Country | 0 | - | 4.70 | 76,796 |
| Famous Germans | 0 | - | 4.50 | 55,627 |
| Capitals of German States | 0 | - | 4.74 | 29,030 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,454 |
| Germany True or False? | 0 | - | 4.61 | 48,946 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,285 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,008 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,756 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,384 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,588 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,372 |
| British to American Food Translation | 0 | - | 3.38 | 52,007 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,527 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,760 |
| Beatles Lyrics First Names | 0 | - | 4.35 | 40,020 |
| Elton John Quiz | 0 | - | 4.49 | 18,504 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,605 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,670 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,323 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,176 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,040 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,932 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 839,271 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,285 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,112 |
| Australian Capitals | 0 | - | 4.92 | 62,793 |
| Word Chain - Australia | 0 | - | 4.38 | 38,201 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,826 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,800 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,650 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,599 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,320 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,590 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,911 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,730 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,432 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,142 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,782 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,221 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,318 |
| European Physical Geography | 0 | - | 4.26 | 33,566 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,598 |
| European Geography A-Z | 0 | - | 4.29 | 49,418 |
| Geography of Russia | 0 | - | 4.57 | 21,570 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,058 |
| History of Austria | 0 | - | 4.70 | 17,945 |
| Austria... or Australia? | 0 | - | 4.68 | 104,621 |
| Famous French People | 0 | - | 4.07 | 35,961 |
| French Foods | 0 | - | 4.00 | 27,747 |
| Geography of the French Empire | 0 | - | 4.45 | 27,187 |
| The French Revolution | 0 | - | 4.47 | 24,099 |
| France Multiple Choice | 0 | - | 4.39 | 40,797 |
| History of France | 0 | - | 4.61 | 57,425 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,534 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,158 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,986 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,200 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,542 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,534 |
| The Mafia Quiz | 0 | - | 4.46 | 23,402 |
| Byzantine History | 0 | - | 4.91 | 28,972 |
| Byzantine Emperors | 0 | - | 4.92 | 14,468 |
| History of The Netherlands | 0 | - | 4.46 | 17,512 |
| The Vikings! | 0 | - | 4.46 | 28,386 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,287 |
| The Portuguese Empire | 0 | - | 4.58 | 12,091 |
| Canary Islands | 0 | - | 4.62 | 17,505 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,421 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,932 |
