| Island Countries | 0 | - | 4.99 | 709,979 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,225 |
| European Countries by Clue | 0 | - | 4.92 | 183,545 |
| Countries by Military Spending | 0 | - | 4.93 | 177,523 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,056 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,369,746 |
| US States Quiz | 0 | - | 5.00 | 16,847,167 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,514 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,212 |
| World Capitals Quiz | 0 | - | 5.00 | 5,066,630 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,112 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,444 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,828 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,535,531 |
| Random Capital to Country | 0 | - | 4.99 | 2,589,091 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,759,856 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,806 |
| All Country Flags of the World | 0 | - | 5.00 | 3,653,857 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,099,414 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,923 |
| Countries that Start with A | 0 | - | 4.98 | 2,160,074 |
| Countries of Africa | 0 | - | 5.00 | 2,532,428 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,389 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,687,573 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,311 |
| Countries that Start with C | 0 | - | 4.96 | 1,820,051 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,863 |
| Countries that Start with S | 0 | - | 4.98 | 1,753,059 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,017 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,959 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,108 |
| Countries that Start with G | 0 | - | 4.97 | 1,501,249 |
| Countries that Start with M | 0 | - | 4.97 | 1,380,233 |
| Countries that Start with E | 0 | - | 4.95 | 1,375,535 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,978 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,756 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,700 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,887 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,579 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,068 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,434 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,510 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,447 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,642 |
| Random Country to Capital | 0 | - | 4.98 | 919,112 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,853 |
| Biggest Cities in the United States | 0 | - | 4.94 | 976,584 |
| Asia Map Quiz | 0 | - | 4.99 | 915,356 |
| Countries that Start with U | 0 | - | 4.97 | 903,696 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,980 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,462 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,880 |
| Counties of England | 0 | - | 4.97 | 795,459 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,551 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,212 |
| Top World Languages | 0 | - | 4.92 | 820,805 |
| Countries of South America | 0 | - | 5.00 | 923,612 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,489 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,671 |
| Countries that Start with K | 0 | - | 4.97 | 814,733 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,177 |
| US States with an Empty Map | 0 | - | 5.00 | 623,738 |
| Countries that Start with V | 0 | - | 4.98 | 608,715 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,875 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,523 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,319 |
| Countries that Start with D | 0 | - | 4.96 | 708,198 |
| Countries That Border Russia | 0 | - | 4.98 | 461,344 |
| One Border Countries | 0 | - | 4.98 | 467,956 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,453 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,724 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,371 |
| Countries with Four Letters | 0 | - | 4.99 | 421,847 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,091 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,711 |
| Countries Bordering France | 0 | - | 4.83 | 402,123 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,905 |
| Northernmost Countries | 0 | - | 4.99 | 360,708 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,171 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,731 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,785 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,750 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,139 |
| Landlocked Countries | 0 | - | 4.99 | 419,429 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,777 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,132 |
| Australia Map Quiz | 0 | - | 4.95 | 344,084 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,744 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,781 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,576 |
| Countries that Start with H | 0 | - | 4.96 | 603,584 |
| Countries that Start with J | 0 | - | 4.98 | 601,384 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,862 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,104 |
| "Land" Countries | 0 | - | 4.98 | 335,912 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,379 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,202 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,793 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,707 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,399 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,987 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,136 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,260 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,781 |
| Countries with Z | 0 | - | 4.98 | 289,915 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,659 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,531 |
| Flags of North and South America | 0 | - | 4.99 | 372,364 |
| EU Countries Quiz | 0 | - | 4.99 | 273,246 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,137 |
| Countries that Border China | 0 | - | 4.96 | 262,956 |
| French-Speaking Countries | 0 | - | 4.85 | 270,304 |
| Countries with Five Letters | 0 | - | 4.96 | 280,733 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,037 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,716 |
| Every Country Shape | 0 | - | 5.00 | 464,287 |
| Europe Capital to Country | 0 | - | 4.99 | 249,753 |
| Longest International Borders | 0 | - | 4.99 | 264,736 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,274 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,147 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,410 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,207 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,754 |
| Megacities on a World Map | 0 | - | 4.98 | 253,717 |
| World Currency Quiz | 0 | - | 4.91 | 302,264 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,614 |
| NATO Countries | 0 | - | 4.98 | 279,588 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,752 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,931 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,339 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,689 |
| Official Cities in the UK | 0 | - | 4.89 | 283,283 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,767 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,858 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,773 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,799 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,825 |
| Countries with Megacities | 0 | - | 4.99 | 261,773 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,140 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,600 |
| World Capitals by Map | 0 | - | 5.00 | 285,817 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,573 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,683 |
| World's Busiest Airports | 0 | - | 4.96 | 232,874 |
| Country Chain | 0 | - | 4.96 | 216,918 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,046 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,455 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,779 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,248 |
| Independence from Whom | 0 | - | 4.99 | 211,439 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,876 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,478 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,347 |
| Countries with Six Letters | 0 | - | 4.94 | 212,591 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,629 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,110 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,222 |
| Flags of Oceania | 0 | - | 5.00 | 258,507 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,044 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,219 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,543 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,117 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,250 |
| Countries in their Native Language | 0 | - | 4.99 | 198,276 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,847 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,967 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,984 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,318 |
| Monarchies of the World | 0 | - | 4.94 | 168,395 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,813 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,907 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,423 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,985 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,830 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,623 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,717 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,355 |
| Countries That End in Y | 0 | - | 4.91 | 185,664 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,166 |
| Olympic Host Countries | 0 | - | 4.98 | 200,520 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,482 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,419 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,840 |
| Every European Country Shape | 0 | - | 4.96 | 201,433 |
| Countries of the Middle East | 0 | - | 4.96 | 200,900 |
| Countries by Official Language | 0 | - | 4.95 | 194,737 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,839 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,248 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,286 |
| Counties of Ireland | 0 | - | 4.92 | 194,911 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,716 |
| Countries Bordering India | 0 | - | 4.98 | 163,365 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,422 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,806 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,762 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,476 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,778 |
| European Cities by Clue | 0 | - | 4.70 | 89,024 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,144 |
| Islands by Country #2 | 0 | - | 4.80 | 77,364 |
