| Island Countries | 0 | - | 4.99 | 710,771 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,647 |
| European Countries by Clue | 0 | - | 4.92 | 183,739 |
| Countries by Military Spending | 0 | - | 4.93 | 178,190 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,859 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,525,505 |
| US States Quiz | 0 | - | 5.00 | 16,896,302 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,223 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,400 |
| World Capitals Quiz | 0 | - | 5.00 | 5,078,991 |
| Europe Map Quiz | 0 | - | 5.00 | 4,766,907 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,832,017 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,836 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,606 |
| Random Capital to Country | 0 | - | 4.99 | 2,592,992 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,371 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,862 |
| All Country Flags of the World | 0 | - | 5.00 | 3,672,374 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,103,468 |
| Countries that Start with B | 0 | - | 4.95 | 2,296,293 |
| Countries that Start with A | 0 | - | 4.98 | 2,164,667 |
| Countries of Africa | 0 | - | 5.00 | 2,540,995 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,953 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,691,308 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,749 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,585 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,935 |
| Countries that Start with S | 0 | - | 4.98 | 1,756,247 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,007 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,588,624 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,879 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,664 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,774 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,412 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,718 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,638 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,276 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,127 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,924 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,616 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,710 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,246,268 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,697 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,664 |
| Random Country to Capital | 0 | - | 4.98 | 921,681 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,623 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,718 |
| Asia Map Quiz | 0 | - | 4.99 | 917,980 |
| Countries that Start with U | 0 | - | 4.97 | 905,131 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,499 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,526 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,936 |
| Counties of England | 0 | - | 4.97 | 797,900 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,996 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,147 |
| Top World Languages | 0 | - | 4.92 | 823,279 |
| Countries of South America | 0 | - | 5.00 | 926,257 |
| Africa Capitals Quiz | 0 | - | 4.99 | 738,702 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,900 |
| Countries that Start with K | 0 | - | 4.97 | 816,648 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,868 |
| US States with an Empty Map | 0 | - | 5.00 | 625,309 |
| Countries that Start with V | 0 | - | 4.98 | 609,772 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,178 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,241 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,565 |
| Countries that Start with D | 0 | - | 4.96 | 710,729 |
| Countries That Border Russia | 0 | - | 4.98 | 462,085 |
| One Border Countries | 0 | - | 4.98 | 469,411 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,133 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,976 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,771 |
| Countries with Four Letters | 0 | - | 4.99 | 422,944 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,809 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,224 |
| Countries Bordering France | 0 | - | 4.83 | 402,857 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,686 |
| Northernmost Countries | 0 | - | 4.99 | 361,633 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,747 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,311 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,679 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,280 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,873 |
| Landlocked Countries | 0 | - | 4.99 | 421,260 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,575 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,710 |
| Australia Map Quiz | 0 | - | 4.95 | 344,847 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,473 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,274 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,008 |
| Countries that Start with H | 0 | - | 4.96 | 605,536 |
| Countries that Start with J | 0 | - | 4.98 | 603,181 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,768 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,694 |
| "Land" Countries | 0 | - | 4.98 | 337,105 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,102 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 291,137 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,114 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,240 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,906 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,255 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,871 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,552 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,082 |
| Countries with Z | 0 | - | 4.98 | 291,228 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,176 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,022 |
| Flags of North and South America | 0 | - | 4.99 | 373,710 |
| EU Countries Quiz | 0 | - | 4.99 | 274,939 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,759 |
| Countries that Border China | 0 | - | 4.96 | 263,336 |
| French-Speaking Countries | 0 | - | 4.85 | 270,705 |
| Countries with Five Letters | 0 | - | 4.96 | 282,096 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,334 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,911 |
| Every Country Shape | 0 | - | 5.00 | 466,556 |
| Europe Capital to Country | 0 | - | 4.99 | 250,582 |
| Longest International Borders | 0 | - | 4.99 | 265,079 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,869 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,763 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,980 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,617 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,124 |
| Megacities on a World Map | 0 | - | 4.98 | 254,980 |
| World Currency Quiz | 0 | - | 4.92 | 303,655 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,954 |
| NATO Countries | 0 | - | 4.98 | 281,031 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,021 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,534 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,791 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,127 |
| Official Cities in the UK | 0 | - | 4.89 | 284,178 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,280 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,047 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,186 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,202 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,111 |
| Countries with Megacities | 0 | - | 4.99 | 264,099 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,568 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,102 |
| World Capitals by Map | 0 | - | 5.00 | 287,055 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,800 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,319 |
| World's Busiest Airports | 0 | - | 4.96 | 234,269 |
| Country Chain | 0 | - | 4.96 | 217,247 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,602 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,398 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,168 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,869 |
| Independence from Whom | 0 | - | 4.99 | 211,921 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,605 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,795 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,573 |
| Countries with Six Letters | 0 | - | 4.94 | 213,353 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,840 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,321 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,813 |
| Flags of Oceania | 0 | - | 5.00 | 259,907 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,586 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,557 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,747 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,462 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,334 |
| Countries in their Native Language | 0 | - | 4.99 | 198,838 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,186 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,577 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,410 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,788 |
| Monarchies of the World | 0 | - | 4.94 | 168,989 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,539 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,558 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,830 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,404 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,370 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,876 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,982 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,223 |
| Countries That End in Y | 0 | - | 4.91 | 185,828 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,603 |
| Olympic Host Countries | 0 | - | 4.98 | 200,945 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,013 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,590 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,071 |
| Every European Country Shape | 0 | - | 4.96 | 201,997 |
| Countries of the Middle East | 0 | - | 4.96 | 201,364 |
| Countries by Official Language | 0 | - | 4.95 | 195,102 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,034 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,557 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,668 |
| Counties of Ireland | 0 | - | 4.92 | 195,637 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,051 |
| Countries Bordering India | 0 | - | 4.98 | 163,467 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,677 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,923 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,021 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,621 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,882 |
| European Cities by Clue | 0 | - | 4.70 | 89,079 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,217 |
| Islands by Country #2 | 0 | - | 4.80 | 77,488 |
