| Island Countries | 0 | - | 4.99 | 712,977 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,853 |
| European Countries by Clue | 0 | - | 4.92 | 184,285 |
| Countries by Military Spending | 0 | - | 4.93 | 179,167 |
| Countries by Three Words #2 | 0 | - | 4.97 | 205,126 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,962,554 |
| US States Quiz | 0 | - | 5.00 | 17,019,064 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,197 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,291 |
| World Capitals Quiz | 0 | - | 5.00 | 5,113,161 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,587 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,852,858 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,826 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,547,641 |
| Random Capital to Country | 0 | - | 4.99 | 2,603,959 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,811,805 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,540 |
| All Country Flags of the World | 0 | - | 5.00 | 3,723,783 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,937 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,795 |
| Countries that Start with A | 0 | - | 4.98 | 2,178,172 |
| Countries of Africa | 0 | - | 5.00 | 2,564,120 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,285 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,700,321 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,209 |
| Countries that Start with C | 0 | - | 4.96 | 1,833,272 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,941 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,720 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,914 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,068 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,757 |
| Countries that Start with G | 0 | - | 4.97 | 1,513,094 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,512 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,531 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,962 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,421 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,704 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,212 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,072 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,098,145 |
| Countries that Start with N | 0 | - | 4.93 | 1,125,041 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,985 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,980 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,197 |
| Random Country to Capital | 0 | - | 4.98 | 929,881 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,802 |
| Biggest Cities in the United States | 0 | - | 4.94 | 988,973 |
| Asia Map Quiz | 0 | - | 4.99 | 926,554 |
| Countries that Start with U | 0 | - | 4.97 | 909,161 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,354 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,077 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 737,066 |
| Counties of England | 0 | - | 4.97 | 804,083 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,261 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,195 |
| Top World Languages | 0 | - | 4.92 | 831,143 |
| Countries of South America | 0 | - | 5.00 | 934,145 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,967 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,896 |
| Countries that Start with K | 0 | - | 4.97 | 821,664 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,780 |
| US States with an Empty Map | 0 | - | 5.00 | 629,495 |
| Countries that Start with V | 0 | - | 4.98 | 612,508 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,858 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 414,385 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,743 |
| Countries that Start with D | 0 | - | 4.96 | 717,681 |
| Countries That Border Russia | 0 | - | 4.98 | 464,864 |
| One Border Countries | 0 | - | 4.98 | 472,541 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,807 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,562 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,311 |
| Countries with Four Letters | 0 | - | 4.99 | 426,398 |
| Countries with the Most Borders | 0 | - | 4.97 | 391,000 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,047 |
| Countries Bordering France | 0 | - | 4.83 | 405,298 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,942 |
| Northernmost Countries | 0 | - | 4.99 | 364,563 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,544 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,022 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,187 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,869 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,251 |
| Landlocked Countries | 0 | - | 4.99 | 427,178 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,346 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,429 |
| Australia Map Quiz | 0 | - | 4.95 | 346,450 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,481 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,112 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,336 |
| Countries that Start with H | 0 | - | 4.96 | 610,460 |
| Countries that Start with J | 0 | - | 4.98 | 607,836 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,376 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,290 |
| "Land" Countries | 0 | - | 4.98 | 338,964 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,180 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,431 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,990 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,660 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,267 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,918 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,111 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,583 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,507 |
| Countries with Z | 0 | - | 4.98 | 292,976 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,922 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,503 |
| Flags of North and South America | 0 | - | 4.99 | 377,996 |
| EU Countries Quiz | 0 | - | 4.99 | 278,835 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,617 |
| Countries that Border China | 0 | - | 4.96 | 264,497 |
| French-Speaking Countries | 0 | - | 4.85 | 271,868 |
| Countries with Five Letters | 0 | - | 4.96 | 284,613 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,308 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,866 |
| Every Country Shape | 0 | - | 5.00 | 472,379 |
| Europe Capital to Country | 0 | - | 4.99 | 252,542 |
| Longest International Borders | 0 | - | 4.99 | 265,988 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,623 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,839 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,532 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,842 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,320 |
| Megacities on a World Map | 0 | - | 4.98 | 257,409 |
| World Currency Quiz | 0 | - | 4.92 | 307,483 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,498 |
| NATO Countries | 0 | - | 4.98 | 283,943 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,714 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,291 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,039 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,594 |
| Official Cities in the UK | 0 | - | 4.89 | 286,821 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,755 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,702 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,346 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,401 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,012 |
| Countries with Megacities | 0 | - | 4.99 | 267,798 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,861 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,895 |
| World Capitals by Map | 0 | - | 5.00 | 289,902 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,440 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,183 |
| World's Busiest Airports | 0 | - | 4.96 | 237,922 |
| Country Chain | 0 | - | 4.96 | 218,645 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,201 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,239 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,123 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,858 |
| Independence from Whom | 0 | - | 4.99 | 213,386 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,646 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,011 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,151 |
| Countries with Six Letters | 0 | - | 4.94 | 214,937 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,354 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,793 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,382 |
| Flags of Oceania | 0 | - | 5.00 | 263,396 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,061 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,525 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,303 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,628 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,553 |
| Countries in their Native Language | 0 | - | 4.99 | 199,948 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,615 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,918 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,044 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,215 |
| Monarchies of the World | 0 | - | 4.94 | 170,524 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,655 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,182 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,803 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,114 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,920 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,311 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,154 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,617 |
| Countries That End in Y | 0 | - | 4.91 | 186,171 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,943 |
| Olympic Host Countries | 0 | - | 4.98 | 202,180 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,905 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,333 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,796 |
| Every European Country Shape | 0 | - | 4.96 | 203,234 |
| Countries of the Middle East | 0 | - | 4.96 | 203,224 |
| Countries by Official Language | 0 | - | 4.95 | 196,201 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,938 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,296 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,196 |
| Counties of Ireland | 0 | - | 4.92 | 197,633 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,888 |
| Countries Bordering India | 0 | - | 4.98 | 163,878 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,431 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,216 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,455 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,297 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,800 |
| European Cities by Clue | 0 | - | 4.70 | 89,211 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,451 |
| Islands by Country #2 | 0 | - | 4.80 | 77,948 |
