| European Countries by First 2 Letters | 0 | - | 4.95 | 531,449 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,577 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,508 |
| 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 | 429,960 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,191 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,982 |
| Celtic Nations | 0 | - | 4.69 | 47,048 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,462 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,836 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,953 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,529 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,580 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,305 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,637 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,668 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,792 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,412 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,551 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,970 |
| 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 | 76,556 |
| 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 |
| Champions League Winners | 0 | - | 4.92 | 1,012,283 |
| 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 | 142,100 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,130 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,890 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,000 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,225 |
| Slavic Languages | 0 | - | 4.68 | 54,573 |
| Departments of France | 0 | - | 4.93 | 54,754 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,696 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,676 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,573 |
| England or Wales? | 0 | - | 4.94 | 45,870 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,475 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,177 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,932 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,572 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,731 |
| History of Russia Quiz | 0 | - | 4.47 | 31,977 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,821 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,989 |
| History of Italy | 0 | - | 4.55 | 32,099 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,145 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,763 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,362 |
| Australian Capitals | 0 | - | 4.92 | 62,793 |
| Europe Map Quiz | 0 | - | 5.00 | 4,778,201 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,385 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,616 |
| Capitals of French Regions | 0 | - | 4.45 | 16,144 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,529 |
| Capitals of German States | 0 | - | 4.74 | 29,030 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,454 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,387 |
| The Trojan War | 0 | - | 4.83 | 39,910 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,239 |
| Name that Greek Letter | 0 | - | 4.93 | 324,521 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,569 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,416 |
| Roman Emperors | 0 | - | 4.95 | 120,745 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,527 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,293 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,400 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,778 |
| European Geography By Letter - C | 0 | - | 4.46 | 120,335 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,765 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,336 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,818 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,703 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,241 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,475 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,114 |
| 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 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,090 |
| Country Codes of Europe | 0 | - | 3.43 | 13,771 |
| Regions of France | 0 | - | 4.70 | 121,612 |
| France Immigration by Country | 0 | - | 4.70 | 76,797 |
| Famous Germans | 0 | - | 4.50 | 55,627 |
| German Groups of Things | 0 | - | 4.47 | 38,577 |
| 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 |
| Italy True or False? | 0 | - | 4.42 | 47,533 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,589 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,372 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,591 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,743 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,756 |
| Asia Map Quiz | 0 | - | 4.99 | 922,222 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,066 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,128 |
| European Physical Geography | 0 | - | 4.26 | 33,566 |
| Geography of Russia | 0 | - | 4.57 | 21,570 |
| History of Austria | 0 | - | 4.70 | 17,945 |
| 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 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,534 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,698 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,978 |
| The Vikings! | 0 | - | 4.46 | 28,386 |
| The Portuguese Empire | 0 | - | 4.58 | 12,091 |
| American to British Word Translation | 0 | - | 4.14 | 139,487 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,002 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,141 |
| Australia Map Quiz | 0 | - | 4.95 | 345,621 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,275 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,811 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,125 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,567 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,565 |
| The Only European Country ... | 0 | - | 4.91 | 218,101 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,046 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,058 |
| Presidents of France | 0 | - | 4.25 | 24,275 |
| History of France | 0 | - | 4.61 | 57,425 |
| Ancient Greek Words | 0 | - | 4.93 | 112,163 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,200 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,287 |
| Sweden True or False? | 0 | - | 4.53 | 40,458 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,091 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,238 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,760 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,651 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,452 |
| Champions League Top 4 | 0 | - | 4.77 | 137,971 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,616 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,883 |
| Countries of Africa | 0 | - | 5.00 | 2,550,976 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,530 |
| African East Coast | 0 | - | 4.96 | 96,490 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,378 |
| Australian States and Territories | 0 | - | 4.96 | 142,507 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,423 |
| Australia True or False | 0 | - | 4.87 | 57,033 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,833 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,585 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,334 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,691 |
| North America Map Quiz | 0 | - | 4.98 | 250,319 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,898 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,607 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,428 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,039 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,778 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,425 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,593 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,912 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,733 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,433 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,145 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,782 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,222 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,319 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,814 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,600 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,213 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,772 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,045 |
| European Geography A-Z | 0 | - | 4.29 | 49,418 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,558 |
| European Geographic Groups of Four | 0 | - | 4.60 | 19,189 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,983 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,849 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,583 |
| Slavic Countries | 0 | - | 4.96 | 112,115 |
| Austria... or Australia? | 0 | - | 4.68 | 104,621 |
| Famous French People | 0 | - | 4.07 | 35,961 |
| Word Chain - France | 0 | - | 4.38 | 42,888 |
| Geography of Germany | 0 | - | 4.35 | 17,234 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,158 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,986 |
| Italian Foods | 0 | - | 4.30 | 73,084 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,534 |
| The Mafia Quiz | 0 | - | 4.46 | 23,402 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,757 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,385 |
| History of The Netherlands | 0 | - | 4.46 | 17,512 |
| History of Spain | 0 | - | 4.23 | 21,140 |
| Languages of Spain | 0 | - | 4.36 | 23,380 |
| Canary Islands | 0 | - | 4.62 | 17,505 |
| Spain True or False? | 0 | - | 4.58 | 30,708 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,932 |
| British to American Word Translation | 0 | - | 3.74 | 255,252 |
| British Foods by Description | 0 | - | 3.94 | 48,357 |
| British Spellings | 0 | - | 4.06 | 99,541 |
| British Groups of Things | 0 | - | 4.25 | 82,960 |
