| Island Countries | 0 | - | 4.99 | 712,235 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,470 |
| European Countries by Clue | 0 | - | 4.92 | 184,088 |
| Countries by Military Spending | 0 | - | 4.93 | 178,892 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,401 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,814,553 |
| US States Quiz | 0 | - | 5.00 | 16,978,633 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,934 |
| United States Map Quiz | 0 | - | 4.98 | 4,169,591 |
| World Capitals Quiz | 0 | - | 5.00 | 5,101,365 |
| Europe Map Quiz | 0 | - | 5.00 | 4,784,067 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,740 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,730 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,544,556 |
| Random Capital to Country | 0 | - | 4.99 | 2,599,990 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,792 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,328 |
| All Country Flags of the World | 0 | - | 5.00 | 3,706,597 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,112,308 |
| Countries that Start with B | 0 | - | 4.95 | 2,304,778 |
| Countries that Start with A | 0 | - | 4.98 | 2,173,811 |
| Countries of Africa | 0 | - | 5.00 | 2,556,110 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,609 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,697,597 |
| South America Map Quiz | 0 | - | 5.00 | 1,555,437 |
| Countries that Start with C | 0 | - | 4.96 | 1,830,100 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,759 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,961 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,896 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,597,704 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,541 |
| Countries that Start with G | 0 | - | 4.97 | 1,510,320 |
| Countries that Start with M | 0 | - | 4.97 | 1,387,324 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,956 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,581 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,621 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,702 |
| Countries that Start with P | 0 | - | 4.94 | 1,221,216 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,751 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,528 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,974 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,255,810 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,922 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,346 |
| Random Country to Capital | 0 | - | 4.98 | 926,905 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,235 |
| Biggest Cities in the United States | 0 | - | 4.94 | 985,890 |
| Asia Map Quiz | 0 | - | 4.99 | 924,139 |
| Countries that Start with U | 0 | - | 4.97 | 907,970 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,849 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,153 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,016 |
| Counties of England | 0 | - | 4.97 | 802,062 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,108 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,630 |
| Top World Languages | 0 | - | 4.92 | 828,715 |
| Countries of South America | 0 | - | 5.00 | 931,474 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,966 |
| Asia Capitals Quiz | 0 | - | 4.98 | 698,014 |
| Countries that Start with K | 0 | - | 4.97 | 820,074 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,193 |
| US States with an Empty Map | 0 | - | 5.00 | 628,060 |
| Countries that Start with V | 0 | - | 4.98 | 611,633 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,643 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,975 |
| Flags of Asia Quiz | 0 | - | 4.99 | 619,160 |
| Countries that Start with D | 0 | - | 4.96 | 715,466 |
| Countries That Border Russia | 0 | - | 4.98 | 464,233 |
| One Border Countries | 0 | - | 4.98 | 471,558 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,196 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,529 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,220 |
| Countries with Four Letters | 0 | - | 4.99 | 425,377 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,273 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,961 |
| Countries Bordering France | 0 | - | 4.83 | 404,640 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,169 |
| Northernmost Countries | 0 | - | 4.99 | 363,608 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,986 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,435 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,603 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,460 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,851 |
| Landlocked Countries | 0 | - | 4.99 | 424,881 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,536 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,855 |
| Australia Map Quiz | 0 | - | 4.95 | 345,991 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,800 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,259 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,218 |
| Countries that Start with H | 0 | - | 4.96 | 608,900 |
| Countries that Start with J | 0 | - | 4.98 | 606,304 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,505 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,730 |
| "Land" Countries | 0 | - | 4.98 | 338,185 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,847 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,060 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,693 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,048 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,837 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,621 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,448 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,165 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,415 |
| Countries with Z | 0 | - | 4.98 | 292,249 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,424 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,870 |
| Flags of North and South America | 0 | - | 4.99 | 376,385 |
| EU Countries Quiz | 0 | - | 4.99 | 277,377 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,981 |
| Countries that Border China | 0 | - | 4.96 | 264,128 |
| French-Speaking Countries | 0 | - | 4.85 | 271,517 |
| Countries with Five Letters | 0 | - | 4.96 | 283,539 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,108 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,944 |
| Every Country Shape | 0 | - | 5.00 | 470,307 |
| Europe Capital to Country | 0 | - | 4.99 | 251,853 |
| Longest International Borders | 0 | - | 4.99 | 265,705 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,479 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,544 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,772 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,453 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,970 |
| Megacities on a World Map | 0 | - | 4.98 | 256,609 |
| World Currency Quiz | 0 | - | 4.92 | 306,271 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,078 |
| NATO Countries | 0 | - | 4.98 | 283,037 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,481 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,699 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,590 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,201 |
| Official Cities in the UK | 0 | - | 4.89 | 285,916 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,286 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,499 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,964 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,974 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,691 |
| Countries with Megacities | 0 | - | 4.99 | 266,671 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,432 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,196 |
| World Capitals by Map | 0 | - | 5.00 | 289,040 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 192,209 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,881 |
| World's Busiest Airports | 0 | - | 4.96 | 236,867 |
| Country Chain | 0 | - | 4.96 | 218,296 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,727 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,254 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,213 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,552 |
| Independence from Whom | 0 | - | 4.99 | 212,875 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,305 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,751 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,960 |
| Countries with Six Letters | 0 | - | 4.94 | 214,259 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,186 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,643 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,874 |
| Flags of Oceania | 0 | - | 5.00 | 262,252 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,563 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,195 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,147 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,008 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,679 |
| Countries in their Native Language | 0 | - | 4.99 | 199,620 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,228 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,454 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,847 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,353 |
| Monarchies of the World | 0 | - | 4.94 | 170,012 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,174 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,801 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,520 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,902 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,405 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,145 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,579 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,850 |
| Countries That End in Y | 0 | - | 4.91 | 186,047 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,530 |
| Olympic Host Countries | 0 | - | 4.98 | 201,785 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,352 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,154 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,556 |
| Every European Country Shape | 0 | - | 4.96 | 202,799 |
| Countries of the Middle East | 0 | - | 4.96 | 202,430 |
| Countries by Official Language | 0 | - | 4.95 | 195,848 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,735 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,062 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,043 |
| Counties of Ireland | 0 | - | 4.92 | 197,060 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,632 |
| Countries Bordering India | 0 | - | 4.98 | 163,772 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,997 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,497 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,914 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,406 |
| European Cities by Clue | 0 | - | 4.70 | 89,160 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,389 |
| Islands by Country #2 | 0 | - | 4.80 | 77,808 |
