| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,236 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,644 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,076 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,905 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,479 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,173 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,989 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,908 |
| Random European Capital to Country | 0 | - | 4.98 | 189,138 |
| Random European Country to Capital | 0 | - | 4.92 | 147,389 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,332 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,363 |
| Random African Capital to Country | 0 | - | 4.97 | 99,707 |
| Random African Country to Capital | 0 | - | 4.94 | 70,196 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,140 |
| Europe Capital to Country | 0 | - | 4.99 | 247,434 |
| Asia Capital to Country | 0 | - | 4.96 | 125,692 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,389 |
| European Capitals by Map | 0 | - | 4.99 | 136,129 |
| African Capitals by Map | 0 | - | 4.99 | 132,106 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,063 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,134 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,572 |
| European Coastal Capitals | 0 | - | 4.95 | 89,707 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,166 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,620 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,675 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,405 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,077 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,061 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,745 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,613 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,372 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,070 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,134 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,678 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,683 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,411 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,738 |
| Monarchies of Europe | 0 | - | 4.90 | 97,275 |
| Monarchies of Asia | 0 | - | 4.97 | 70,577 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,416 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,461 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,230 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,375 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,640 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,855 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,358 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,460 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,776 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,179 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,333 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,197 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,047 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,205 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,084 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,478 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,428 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,455 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,992 |
| Countries with Megacities | 0 | - | 4.99 | 246,513 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,909 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,793 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,364 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,754 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,687 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,882 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,612 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,564 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,551 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,340 |
| Countries by Capital City | 0 | - | 5.00 | 66,560 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,282 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,866 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,221 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,386 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,142 |
| Moved Capital Cities | 0 | - | 4.96 | 73,552 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,496 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,390 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,072 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,150 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,101 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,922 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,082 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,773 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,820 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,823 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,441 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,538 |
| North American Sports Cities | 0 | - | 4.83 | 170,844 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,903 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,845 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,028 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,686 |
| Cities by Former Name | 0 | - | 4.84 | 90,930 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,672 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,219 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,788 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,780 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,870 |
| World Capitals by Map | 0 | - | 5.00 | 283,059 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,633 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,346 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,238 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,602 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,788 |
| Random Country to Capital | 0 | - | 4.98 | 911,220 |
| Capitals Starting With H | 0 | - | 4.90 | 90,572 |
| Capitals Starting With K | 0 | - | 4.85 | 75,644 |
| Capitals Starting With L | 0 | - | 4.81 | 86,785 |
| Capitals Starting With M | 0 | - | 4.93 | 105,982 |
| Capitals Starting With P | 0 | - | 4.88 | 77,143 |
| Capitals Starting With R | 0 | - | 4.87 | 80,929 |
| Capitals Starting With S | 0 | - | 4.89 | 84,761 |
| Capitals Starting With T | 0 | - | 4.84 | 75,256 |
| Capitals Starting With W | 0 | - | 4.89 | 90,575 |
| Capitals Starting With A | 0 | - | 4.97 | 126,483 |
| Capitals Starting With B | 0 | - | 4.89 | 117,230 |
| Capitals Starting With D | 0 | - | 4.93 | 95,334 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,496 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,866 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,878 |
| Olympic Host Countries | 0 | - | 4.98 | 198,828 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,778 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,454 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,215 |
| The Only European Country ... | 0 | - | 4.91 | 213,690 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,015 |
| Hindu Countries | 0 | - | 4.85 | 49,528 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,445 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,177 |
| Countries of Africa | 0 | - | 5.00 | 2,506,379 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,293 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,286 |
| Australia A-Z | 0 | - | 4.54 | 49,772 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,920 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,140 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,111 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,257 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,852 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,355 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,534 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,484 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,396 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,235 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,217 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,561 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,528 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,762 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,159 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,138 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,080 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,565 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,319 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,016 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,294 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,310 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,154 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,024 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,744 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,627 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,302 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,091 |
| Former Capitals | 0 | - | 4.88 | 71,124 |
| Capital Cities Chain | 0 | - | 4.84 | 81,875 |
| Coldest World Capitals | 0 | - | 4.95 | 133,020 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,747 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,953 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,156 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,362 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,384 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,215 |
| Countries of the Middle East | 0 | - | 4.96 | 198,824 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,210 |
| Slavic Countries | 0 | - | 4.96 | 110,815 |
| African Island Countries | 0 | - | 4.96 | 100,734 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,478 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,876 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,275 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,938 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,066 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,037 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,177 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,659 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,435 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,024 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,736 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,566 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,666 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,721 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,131 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,132 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,253 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,530 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,209 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,369 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,196 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,471 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,968 |
