| Island Countries | 0 | - | 4.99 | 713,125 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,934 |
| European Countries by Clue | 0 | - | 4.92 | 184,337 |
| Countries by Military Spending | 0 | - | 4.93 | 179,214 |
| Countries by Three Words #2 | 0 | - | 4.97 | 205,270 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,994,782 |
| US States Quiz | 0 | - | 5.00 | 17,028,530 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,661,631 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,027 |
| World Capitals Quiz | 0 | - | 5.00 | 5,116,025 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,459 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,854,834 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,054 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,548,251 |
| Random Capital to Country | 0 | - | 4.99 | 2,604,902 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,695 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,200 |
| All Country Flags of the World | 0 | - | 5.00 | 3,727,567 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,074 |
| Countries that Start with B | 0 | - | 4.95 | 2,309,758 |
| Countries that Start with A | 0 | - | 4.98 | 2,179,116 |
| Countries of Africa | 0 | - | 5.00 | 2,565,845 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,620 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,700,916 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,806 |
| Countries that Start with C | 0 | - | 4.96 | 1,833,972 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,197 |
| Countries that Start with S | 0 | - | 4.98 | 1,765,352 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,582 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,038 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,169 |
| Countries that Start with G | 0 | - | 4.97 | 1,513,755 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,998 |
| Countries that Start with E | 0 | - | 4.95 | 1,387,165 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,537 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,586 |
| Countries that Start with I | 0 | - | 4.92 | 1,296,300 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,673 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,547 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,098,506 |
| Countries that Start with N | 0 | - | 4.93 | 1,125,562 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,081 |
| Countries that Start with L | 0 | - | 4.98 | 1,098,458 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,410 |
| Random Country to Capital | 0 | - | 4.98 | 930,610 |
| Countries that Start with T | 0 | - | 4.90 | 1,016,182 |
| Biggest Cities in the United States | 0 | - | 4.94 | 989,579 |
| Asia Map Quiz | 0 | - | 4.99 | 927,044 |
| Countries that Start with U | 0 | - | 4.97 | 909,463 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,028 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,786 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 737,292 |
| Counties of England | 0 | - | 4.97 | 804,580 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,522 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,612 |
| Top World Languages | 0 | - | 4.92 | 831,797 |
| Countries of South America | 0 | - | 5.00 | 934,743 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,341 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,235 |
| Countries that Start with K | 0 | - | 4.97 | 822,058 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,922 |
| US States with an Empty Map | 0 | - | 5.00 | 629,747 |
| Countries that Start with V | 0 | - | 4.98 | 612,714 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 511,117 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,480 |
| Flags of Asia Quiz | 0 | - | 4.99 | 622,257 |
| Countries that Start with D | 0 | - | 4.96 | 718,201 |
| Countries That Border Russia | 0 | - | 4.98 | 465,017 |
| One Border Countries | 0 | - | 4.98 | 472,760 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,928 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,779 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,549 |
| Countries with Four Letters | 0 | - | 4.99 | 426,627 |
| Countries with the Most Borders | 0 | - | 4.97 | 391,189 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,236 |
| Countries Bordering France | 0 | - | 4.83 | 405,435 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,118 |
| Northernmost Countries | 0 | - | 4.99 | 364,760 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,660 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,136 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,312 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,944 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,335 |
| Landlocked Countries | 0 | - | 4.99 | 427,570 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,499 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,547 |
| Australia Map Quiz | 0 | - | 4.95 | 346,567 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,622 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,299 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,592 |
| Countries that Start with H | 0 | - | 4.96 | 610,853 |
| Countries that Start with J | 0 | - | 4.98 | 608,198 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,577 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,430 |
| "Land" Countries | 0 | - | 4.98 | 339,127 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,250 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 292,504 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,269 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,752 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,341 |
| Flags of Africa Quiz | 0 | - | 5.00 | 479,435 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,292 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,649 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,741 |
| Countries with Z | 0 | - | 4.98 | 293,138 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,038 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,585 |
| Flags of North and South America | 0 | - | 4.99 | 378,361 |
| EU Countries Quiz | 0 | - | 4.99 | 279,080 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,743 |
| Countries that Border China | 0 | - | 4.96 | 264,594 |
| French-Speaking Countries | 0 | - | 4.85 | 271,961 |
| Countries with Five Letters | 0 | - | 4.96 | 284,780 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,361 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,056 |
| Every Country Shape | 0 | - | 5.00 | 472,767 |
| Europe Capital to Country | 0 | - | 4.99 | 252,681 |
| Longest International Borders | 0 | - | 4.99 | 266,056 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,217 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,907 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,910 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,939 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,388 |
| Megacities on a World Map | 0 | - | 4.98 | 257,592 |
| World Currency Quiz | 0 | - | 4.92 | 307,765 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,591 |
| NATO Countries | 0 | - | 4.98 | 284,164 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,768 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,434 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,116 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,683 |
| Official Cities in the UK | 0 | - | 4.89 | 286,997 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,882 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,734 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,432 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,813 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,087 |
| Countries with Megacities | 0 | - | 4.99 | 268,071 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,958 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,004 |
| World Capitals by Map | 0 | - | 5.00 | 290,104 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,489 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,235 |
| World's Busiest Airports | 0 | - | 4.96 | 238,140 |
| Country Chain | 0 | - | 4.96 | 218,712 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,317 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,451 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,233 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 197,241 |
| Independence from Whom | 0 | - | 4.99 | 213,486 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,725 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,069 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,196 |
| Countries with Six Letters | 0 | - | 4.94 | 215,067 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,403 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,821 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,503 |
| Flags of Oceania | 0 | - | 5.00 | 263,646 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,181 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,602 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,339 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,698 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,742 |
| Countries in their Native Language | 0 | - | 4.99 | 200,012 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,744 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 175,003 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,076 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,474 |
| Monarchies of the World | 0 | - | 4.94 | 170,619 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,762 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,268 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,857 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,255 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,038 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,334 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,224 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,766 |
| Countries That End in Y | 0 | - | 4.91 | 186,194 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,027 |
| Olympic Host Countries | 0 | - | 4.98 | 202,317 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,019 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,371 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,861 |
| Every European Country Shape | 0 | - | 4.96 | 203,318 |
| Countries of the Middle East | 0 | - | 4.96 | 203,343 |
| Countries by Official Language | 0 | - | 4.95 | 196,297 |
| Countries Closest to Australia | 0 | - | 4.99 | 168,010 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,353 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,231 |
| Counties of Ireland | 0 | - | 4.92 | 197,751 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,940 |
| Countries Bordering India | 0 | - | 4.98 | 163,912 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,487 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,240 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,521 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,326 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,836 |
| European Cities by Clue | 0 | - | 4.70 | 89,224 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,467 |
| Islands by Country #2 | 0 | - | 4.80 | 78,019 |
