| Island Countries | 0 | - | 4.99 | 712,923 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,835 |
| European Countries by Clue | 0 | - | 4.92 | 184,271 |
| Countries by Military Spending | 0 | - | 4.93 | 179,149 |
| Countries by Three Words #2 | 0 | - | 4.97 | 205,083 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,953,040 |
| US States Quiz | 0 | - | 5.00 | 17,016,290 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,658,482 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,054 |
| World Capitals Quiz | 0 | - | 5.00 | 5,112,361 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,072 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,852,289 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,410 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,547,462 |
| Random Capital to Country | 0 | - | 4.99 | 2,603,668 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,932 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,352 |
| All Country Flags of the World | 0 | - | 5.00 | 3,722,635 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,654 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,503 |
| Countries that Start with A | 0 | - | 4.98 | 2,177,876 |
| Countries of Africa | 0 | - | 5.00 | 2,563,618 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,200 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,700,148 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,071 |
| Countries that Start with C | 0 | - | 4.96 | 1,833,054 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,858 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,529 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,719 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,601,769 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,281 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,870 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,347 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,330 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,851 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,371 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,550 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,056 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,913 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,098,041 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,886 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,692 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,832 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,146 |
| Random Country to Capital | 0 | - | 4.98 | 929,721 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,685 |
| Biggest Cities in the United States | 0 | - | 4.94 | 988,779 |
| Asia Map Quiz | 0 | - | 4.99 | 926,377 |
| Countries that Start with U | 0 | - | 4.97 | 909,069 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,092 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,911 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,996 |
| Counties of England | 0 | - | 4.97 | 803,978 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,198 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,086 |
| Top World Languages | 0 | - | 4.92 | 831,006 |
| Countries of South America | 0 | - | 5.00 | 933,978 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,875 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,754 |
| Countries that Start with K | 0 | - | 4.97 | 821,551 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,736 |
| US States with an Empty Map | 0 | - | 5.00 | 629,396 |
| Countries that Start with V | 0 | - | 4.98 | 612,443 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,757 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 414,343 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,594 |
| Countries that Start with D | 0 | - | 4.96 | 717,522 |
| Countries That Border Russia | 0 | - | 4.98 | 464,800 |
| One Border Countries | 0 | - | 4.98 | 472,450 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,780 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,507 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,230 |
| Countries with Four Letters | 0 | - | 4.99 | 426,329 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,949 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,991 |
| Countries Bordering France | 0 | - | 4.83 | 405,249 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,887 |
| Northernmost Countries | 0 | - | 4.99 | 364,487 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,495 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,989 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,143 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,827 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,234 |
| Landlocked Countries | 0 | - | 4.99 | 427,052 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,280 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,385 |
| Australia Map Quiz | 0 | - | 4.95 | 346,418 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,415 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,064 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,257 |
| Countries that Start with H | 0 | - | 4.96 | 610,334 |
| Countries that Start with J | 0 | - | 4.98 | 607,725 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,309 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,248 |
| "Land" Countries | 0 | - | 4.98 | 338,909 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,154 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,407 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,899 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,635 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,234 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,789 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,084 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,561 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,439 |
| Countries with Z | 0 | - | 4.98 | 292,928 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,881 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,482 |
| Flags of North and South America | 0 | - | 4.99 | 377,858 |
| EU Countries Quiz | 0 | - | 4.99 | 278,765 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,577 |
| Countries that Border China | 0 | - | 4.96 | 264,472 |
| French-Speaking Countries | 0 | - | 4.85 | 271,844 |
| Countries with Five Letters | 0 | - | 4.96 | 284,550 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,296 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,806 |
| Every Country Shape | 0 | - | 5.00 | 472,232 |
| Europe Capital to Country | 0 | - | 4.99 | 252,498 |
| Longest International Borders | 0 | - | 4.99 | 265,955 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,559 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,820 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,402 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,810 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,288 |
| Megacities on a World Map | 0 | - | 4.98 | 257,361 |
| World Currency Quiz | 0 | - | 4.92 | 307,409 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,463 |
| NATO Countries | 0 | - | 4.98 | 283,899 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,696 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,247 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,014 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,574 |
| Official Cities in the UK | 0 | - | 4.89 | 286,750 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,727 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,688 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,318 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,371 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,982 |
| Countries with Megacities | 0 | - | 4.99 | 267,719 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,843 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,863 |
| World Capitals by Map | 0 | - | 5.00 | 289,836 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,432 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,161 |
| World's Busiest Airports | 0 | - | 4.96 | 237,856 |
| Country Chain | 0 | - | 4.96 | 218,622 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,164 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,186 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,088 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,837 |
| Independence from Whom | 0 | - | 4.99 | 213,355 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,620 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,002 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,132 |
| Countries with Six Letters | 0 | - | 4.94 | 214,892 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,335 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,786 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,348 |
| Flags of Oceania | 0 | - | 5.00 | 263,312 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,025 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,503 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,292 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,607 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,490 |
| Countries in their Native Language | 0 | - | 4.99 | 199,923 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,591 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,893 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,029 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,168 |
| Monarchies of the World | 0 | - | 4.94 | 170,485 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,632 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,153 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,779 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,098 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,890 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,299 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,137 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,600 |
| Countries That End in Y | 0 | - | 4.91 | 186,161 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,922 |
| Olympic Host Countries | 0 | - | 4.98 | 202,170 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,866 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,329 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,784 |
| Every European Country Shape | 0 | - | 4.96 | 203,217 |
| Countries of the Middle East | 0 | - | 4.96 | 203,196 |
| Countries by Official Language | 0 | - | 4.95 | 196,175 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,924 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,280 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,194 |
| Counties of Ireland | 0 | - | 4.92 | 197,605 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,876 |
| Countries Bordering India | 0 | - | 4.98 | 163,870 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,419 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,205 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,434 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,279 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,787 |
| European Cities by Clue | 0 | - | 4.70 | 89,209 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,447 |
| Islands by Country #2 | 0 | - | 4.80 | 77,943 |
