| Island Countries | 0 | - | 4.99 | 711,069 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,882 |
| European Countries by Clue | 0 | - | 4.92 | 183,818 |
| Countries by Military Spending | 0 | - | 4.93 | 178,357 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,196 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,588,029 |
| US States Quiz | 0 | - | 5.00 | 16,916,060 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,493 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,414 |
| World Capitals Quiz | 0 | - | 5.00 | 5,083,582 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,657 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,962 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,825 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,941 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,549 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,779,256 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,600 |
| All Country Flags of the World | 0 | - | 5.00 | 3,679,519 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,359 |
| Countries that Start with B | 0 | - | 4.95 | 2,297,929 |
| Countries that Start with A | 0 | - | 4.98 | 2,166,527 |
| Countries of Africa | 0 | - | 5.00 | 2,544,615 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,661 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,692,700 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,669 |
| Countries that Start with C | 0 | - | 4.96 | 1,824,907 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,797 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,447 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,267 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,664 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,510 |
| Countries that Start with G | 0 | - | 4.97 | 1,505,840 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,720 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,561 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,633 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,907 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,190 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,986 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,949 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,234 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,586 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,342 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,543 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,033 |
| Random Country to Capital | 0 | - | 4.98 | 922,713 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,234 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,003 |
| Asia Map Quiz | 0 | - | 4.99 | 919,504 |
| Countries that Start with U | 0 | - | 4.97 | 905,627 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,040 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,690 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,366 |
| Counties of England | 0 | - | 4.97 | 798,784 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,635 |
| Oceania Map Quiz | 0 | - | 4.98 | 649,398 |
| Top World Languages | 0 | - | 4.92 | 824,339 |
| Countries of South America | 0 | - | 5.00 | 927,431 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,668 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,677 |
| Countries that Start with K | 0 | - | 4.97 | 817,335 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,132 |
| US States with an Empty Map | 0 | - | 5.00 | 625,936 |
| Countries that Start with V | 0 | - | 4.98 | 610,130 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,826 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,378 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,770 |
| Countries that Start with D | 0 | - | 4.96 | 711,688 |
| Countries That Border Russia | 0 | - | 4.98 | 462,796 |
| One Border Countries | 0 | - | 4.98 | 469,906 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,372 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,499 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,313 |
| Countries with Four Letters | 0 | - | 4.99 | 423,319 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,108 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,529 |
| Countries Bordering France | 0 | - | 4.83 | 403,519 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,988 |
| Northernmost Countries | 0 | - | 4.99 | 361,988 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,015 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,519 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,645 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,782 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,140 |
| Landlocked Countries | 0 | - | 4.99 | 422,048 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,005 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,979 |
| Australia Map Quiz | 0 | - | 4.95 | 345,106 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,749 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,715 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,533 |
| Countries that Start with H | 0 | - | 4.96 | 606,199 |
| Countries that Start with J | 0 | - | 4.98 | 603,806 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,112 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,923 |
| "Land" Countries | 0 | - | 4.98 | 337,354 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,292 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,408 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,603 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,428 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,090 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,072 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,208 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,670 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,552 |
| Countries with Z | 0 | - | 4.98 | 291,450 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,390 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,198 |
| Flags of North and South America | 0 | - | 4.99 | 374,249 |
| EU Countries Quiz | 0 | - | 4.99 | 275,525 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,990 |
| Countries that Border China | 0 | - | 4.96 | 263,537 |
| French-Speaking Countries | 0 | - | 4.85 | 270,858 |
| Countries with Five Letters | 0 | - | 4.96 | 282,476 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,465 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,317 |
| Every Country Shape | 0 | - | 5.00 | 467,393 |
| Europe Capital to Country | 0 | - | 4.99 | 250,859 |
| Longest International Borders | 0 | - | 4.99 | 265,207 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,460 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,964 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,622 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,816 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,274 |
| Megacities on a World Map | 0 | - | 4.98 | 255,324 |
| World Currency Quiz | 0 | - | 4.92 | 304,166 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,107 |
| NATO Countries | 0 | - | 4.98 | 281,548 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,113 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,780 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,991 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,288 |
| Official Cities in the UK | 0 | - | 4.89 | 284,492 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,492 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,129 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,343 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,354 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,230 |
| Countries with Megacities | 0 | - | 4.99 | 264,597 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,742 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,325 |
| World Capitals by Map | 0 | - | 5.00 | 287,418 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,884 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,436 |
| World's Busiest Airports | 0 | - | 4.96 | 234,895 |
| Country Chain | 0 | - | 4.96 | 217,393 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,833 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,805 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,335 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,036 |
| Independence from Whom | 0 | - | 4.99 | 212,116 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,745 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,197 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,647 |
| Countries with Six Letters | 0 | - | 4.94 | 213,549 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,908 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,391 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,019 |
| Flags of Oceania | 0 | - | 5.00 | 260,463 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,809 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,691 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,839 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,589 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,765 |
| Countries in their Native Language | 0 | - | 4.99 | 199,054 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,344 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,782 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,527 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,914 |
| Monarchies of the World | 0 | - | 4.94 | 169,223 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,699 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,757 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,966 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,530 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,615 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,943 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,105 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,555 |
| Countries That End in Y | 0 | - | 4.91 | 185,872 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,790 |
| Olympic Host Countries | 0 | - | 4.98 | 201,096 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,209 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,639 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,192 |
| Every European Country Shape | 0 | - | 4.96 | 202,179 |
| Countries of the Middle East | 0 | - | 4.96 | 201,655 |
| Countries by Official Language | 0 | - | 4.95 | 195,266 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,121 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,648 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,763 |
| Counties of Ireland | 0 | - | 4.92 | 196,039 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,168 |
| Countries Bordering India | 0 | - | 4.98 | 163,551 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,750 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,967 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,146 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,682 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,238 |
| European Cities by Clue | 0 | - | 4.70 | 89,092 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,251 |
| Islands by Country #2 | 0 | - | 4.80 | 77,547 |
