| Island Countries | 0 | - | 4.99 | 713,226 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,957 |
| European Countries by Clue | 0 | - | 4.92 | 184,352 |
| Countries by Military Spending | 0 | - | 4.93 | 179,236 |
| Countries by Three Words #2 | 0 | - | 4.97 | 205,348 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,009,182 |
| US States Quiz | 0 | - | 5.00 | 17,032,316 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,521 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,366 |
| World Capitals Quiz | 0 | - | 5.00 | 5,117,270 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,256 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,855,648 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,579 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,548,556 |
| Random Capital to Country | 0 | - | 4.99 | 2,605,233 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,829 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,473 |
| All Country Flags of the World | 0 | - | 5.00 | 3,729,358 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,450 |
| Countries that Start with B | 0 | - | 4.95 | 2,310,141 |
| Countries that Start with A | 0 | - | 4.98 | 2,179,536 |
| Countries of Africa | 0 | - | 5.00 | 2,566,510 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,743 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,701,290 |
| South America Map Quiz | 0 | - | 5.00 | 1,559,026 |
| Countries that Start with C | 0 | - | 4.96 | 1,834,311 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,291 |
| Countries that Start with S | 0 | - | 4.98 | 1,765,632 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,869 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,563 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,802 |
| Countries that Start with G | 0 | - | 4.97 | 1,514,032 |
| Countries that Start with M | 0 | - | 4.97 | 1,390,214 |
| Countries that Start with E | 0 | - | 4.95 | 1,387,432 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,752 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,632 |
| Countries that Start with I | 0 | - | 4.92 | 1,296,544 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,882 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,766 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,098,674 |
| Countries that Start with N | 0 | - | 4.93 | 1,125,763 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,533 |
| Countries that Start with L | 0 | - | 4.98 | 1,098,664 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,485 |
| Random Country to Capital | 0 | - | 4.98 | 930,965 |
| Countries that Start with T | 0 | - | 4.90 | 1,016,331 |
| Biggest Cities in the United States | 0 | - | 4.94 | 989,880 |
| Asia Map Quiz | 0 | - | 4.99 | 927,253 |
| Countries that Start with U | 0 | - | 4.97 | 909,610 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,348 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,034,033 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 737,398 |
| Counties of England | 0 | - | 4.97 | 804,747 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,656 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,828 |
| Top World Languages | 0 | - | 4.92 | 832,205 |
| Countries of South America | 0 | - | 5.00 | 934,960 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,498 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,477 |
| Countries that Start with K | 0 | - | 4.97 | 822,213 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,965 |
| US States with an Empty Map | 0 | - | 5.00 | 629,886 |
| Countries that Start with V | 0 | - | 4.98 | 612,811 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 511,282 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,511 |
| Flags of Asia Quiz | 0 | - | 4.99 | 622,476 |
| Countries that Start with D | 0 | - | 4.96 | 718,425 |
| Countries That Border Russia | 0 | - | 4.98 | 465,095 |
| One Border Countries | 0 | - | 4.98 | 472,866 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,980 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,926 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,657 |
| Countries with Four Letters | 0 | - | 4.99 | 426,703 |
| Countries with the Most Borders | 0 | - | 4.97 | 391,276 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,302 |
| Countries Bordering France | 0 | - | 4.83 | 405,507 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,220 |
| Northernmost Countries | 0 | - | 4.99 | 364,850 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,704 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,194 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,376 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,982 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,362 |
| Landlocked Countries | 0 | - | 4.99 | 427,737 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,571 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,612 |
| Australia Map Quiz | 0 | - | 4.95 | 346,638 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,679 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,402 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,705 |
| Countries that Start with H | 0 | - | 4.96 | 611,014 |
| Countries that Start with J | 0 | - | 4.98 | 608,334 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,654 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,515 |
| "Land" Countries | 0 | - | 4.98 | 339,184 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,290 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 293,714 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,404 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,792 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,388 |
| Flags of Africa Quiz | 0 | - | 5.00 | 479,649 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,344 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,675 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,854 |
| Countries with Z | 0 | - | 4.98 | 293,178 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,093 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,628 |
| Flags of North and South America | 0 | - | 4.99 | 378,512 |
| EU Countries Quiz | 0 | - | 4.99 | 279,192 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,799 |
| Countries that Border China | 0 | - | 4.96 | 264,620 |
| French-Speaking Countries | 0 | - | 4.85 | 272,001 |
| Countries with Five Letters | 0 | - | 4.96 | 284,847 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,375 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,161 |
| Every Country Shape | 0 | - | 5.00 | 472,941 |
| Europe Capital to Country | 0 | - | 4.99 | 252,734 |
| Longest International Borders | 0 | - | 4.99 | 266,090 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,342 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,939 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,066 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,983 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,414 |
| Megacities on a World Map | 0 | - | 4.98 | 257,662 |
| World Currency Quiz | 0 | - | 4.92 | 307,889 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,640 |
| NATO Countries | 0 | - | 4.98 | 284,281 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,797 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,492 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,156 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,721 |
| Official Cities in the UK | 0 | - | 4.89 | 287,076 |
| Summer Olympics Host Cities | 0 | - | 4.97 | 216,934 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,748 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,475 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,849 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,122 |
| Countries with Megacities | 0 | - | 4.99 | 268,195 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,994 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,047 |
| World Capitals by Map | 0 | - | 5.00 | 290,197 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,506 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,273 |
| World's Busiest Airports | 0 | - | 4.96 | 238,241 |
| Country Chain | 0 | - | 4.96 | 218,739 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 281,419 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,515 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,269 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 197,275 |
| Independence from Whom | 0 | - | 4.99 | 213,549 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,762 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,094 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,226 |
| Countries with Six Letters | 0 | - | 4.94 | 215,122 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,417 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,836 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,547 |
| Flags of Oceania | 0 | - | 5.00 | 263,719 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,224 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,634 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,359 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,725 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,825 |
| Countries in their Native Language | 0 | - | 4.99 | 200,049 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,790 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 175,044 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,103 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,524 |
| Monarchies of the World | 0 | - | 4.94 | 170,673 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,802 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,305 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,885 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,403 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,076 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,344 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,248 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,840 |
| Countries That End in Y | 0 | - | 4.91 | 186,206 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,072 |
| Olympic Host Countries | 0 | - | 4.98 | 202,369 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,075 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,392 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,889 |
| Every European Country Shape | 0 | - | 4.96 | 203,355 |
| Countries of the Middle East | 0 | - | 4.96 | 203,385 |
| Countries by Official Language | 0 | - | 4.95 | 196,337 |
| Countries Closest to Australia | 0 | - | 4.99 | 168,037 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,384 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,247 |
| Counties of Ireland | 0 | - | 4.92 | 197,788 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,972 |
| Countries Bordering India | 0 | - | 4.98 | 163,924 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,504 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,252 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,553 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,334 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,853 |
| European Cities by Clue | 0 | - | 4.70 | 89,227 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,473 |
| Islands by Country #2 | 0 | - | 4.80 | 78,075 |
