| Island Countries | 0 | - | 4.99 | 711,390 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,055 |
| European Countries by Clue | 0 | - | 4.92 | 183,912 |
| Countries by Military Spending | 0 | - | 4.93 | 178,568 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,558 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,659,214 |
| US States Quiz | 0 | - | 5.00 | 16,936,005 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,637,874 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,167 |
| World Capitals Quiz | 0 | - | 5.00 | 5,089,253 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,016 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,422 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,071 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,541,437 |
| Random Capital to Country | 0 | - | 4.99 | 2,596,260 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,483 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,437 |
| All Country Flags of the World | 0 | - | 5.00 | 3,687,852 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,107,411 |
| Countries that Start with B | 0 | - | 4.95 | 2,299,949 |
| Countries that Start with A | 0 | - | 4.98 | 2,168,829 |
| Countries of Africa | 0 | - | 5.00 | 2,548,204 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,166 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,264 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,612 |
| Countries that Start with C | 0 | - | 4.96 | 1,826,548 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,399 |
| Countries that Start with S | 0 | - | 4.98 | 1,758,870 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,780 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,593,069 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,329 |
| Countries that Start with G | 0 | - | 4.97 | 1,507,201 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,875 |
| Countries that Start with E | 0 | - | 4.95 | 1,380,930 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,902 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,231 |
| Countries that Start with I | 0 | - | 4.92 | 1,291,296 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,996 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,088 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,946 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,662 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,710 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,607 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,443 |
| Random Country to Capital | 0 | - | 4.98 | 923,946 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,995 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,381 |
| Asia Map Quiz | 0 | - | 4.99 | 921,126 |
| Countries that Start with U | 0 | - | 4.97 | 906,226 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,626 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,069 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,842 |
| Counties of England | 0 | - | 4.97 | 799,972 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,294 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,181 |
| Top World Languages | 0 | - | 4.92 | 825,815 |
| Countries of South America | 0 | - | 5.00 | 928,711 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,798 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,683 |
| Countries that Start with K | 0 | - | 4.97 | 818,174 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,517 |
| US States with an Empty Map | 0 | - | 5.00 | 626,559 |
| Countries that Start with V | 0 | - | 4.98 | 610,585 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,341 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,552 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,887 |
| Countries that Start with D | 0 | - | 4.96 | 712,887 |
| Countries That Border Russia | 0 | - | 4.98 | 463,263 |
| One Border Countries | 0 | - | 4.98 | 470,429 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,635 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,192 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,948 |
| Countries with Four Letters | 0 | - | 4.99 | 423,862 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,459 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,984 |
| Countries Bordering France | 0 | - | 4.83 | 403,903 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,361 |
| Northernmost Countries | 0 | - | 4.99 | 362,452 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,360 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,815 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,962 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,966 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,372 |
| Landlocked Countries | 0 | - | 4.99 | 422,958 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,604 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,244 |
| Australia Map Quiz | 0 | - | 4.95 | 345,443 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,063 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,266 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,082 |
| Countries that Start with H | 0 | - | 4.96 | 607,040 |
| Countries that Start with J | 0 | - | 4.98 | 604,591 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,542 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,194 |
| "Land" Countries | 0 | - | 4.98 | 337,611 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,442 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,636 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,311 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,614 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,325 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,307 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,729 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,853 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,154 |
| Countries with Z | 0 | - | 4.98 | 291,704 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,653 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,415 |
| Flags of North and South America | 0 | - | 4.99 | 374,939 |
| EU Countries Quiz | 0 | - | 4.99 | 276,113 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,302 |
| Countries that Border China | 0 | - | 4.96 | 263,716 |
| French-Speaking Countries | 0 | - | 4.85 | 271,085 |
| Countries with Five Letters | 0 | - | 4.96 | 282,882 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,710 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,806 |
| Every Country Shape | 0 | - | 5.00 | 468,453 |
| Europe Capital to Country | 0 | - | 4.99 | 251,197 |
| Longest International Borders | 0 | - | 4.99 | 265,376 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,064 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,172 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,464 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,080 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,527 |
| Megacities on a World Map | 0 | - | 4.98 | 255,731 |
| World Currency Quiz | 0 | - | 4.92 | 304,851 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,293 |
| NATO Countries | 0 | - | 4.98 | 281,999 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,231 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,060 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,191 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,703 |
| Official Cities in the UK | 0 | - | 4.89 | 284,938 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,738 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,250 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,533 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,549 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,398 |
| Countries with Megacities | 0 | - | 4.99 | 265,268 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,991 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,599 |
| World Capitals by Map | 0 | - | 5.00 | 287,972 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,987 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,598 |
| World's Busiest Airports | 0 | - | 4.96 | 235,541 |
| Country Chain | 0 | - | 4.96 | 217,801 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,121 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,253 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,700 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,200 |
| Independence from Whom | 0 | - | 4.99 | 212,323 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,932 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,385 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,745 |
| Countries with Six Letters | 0 | - | 4.94 | 213,800 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,986 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,473 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,260 |
| Flags of Oceania | 0 | - | 5.00 | 261,030 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,036 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,865 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,935 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,714 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,234 |
| Countries in their Native Language | 0 | - | 4.99 | 199,230 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,487 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,992 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,619 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,052 |
| Monarchies of the World | 0 | - | 4.94 | 169,483 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,850 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,945 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,069 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,669 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,870 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,992 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,236 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,929 |
| Countries That End in Y | 0 | - | 4.91 | 185,937 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,004 |
| Olympic Host Countries | 0 | - | 4.98 | 201,304 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,547 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,838 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,308 |
| Every European Country Shape | 0 | - | 4.96 | 202,383 |
| Countries of the Middle East | 0 | - | 4.96 | 201,914 |
| Countries by Official Language | 0 | - | 4.95 | 195,456 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,218 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,798 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,856 |
| Counties of Ireland | 0 | - | 4.92 | 196,348 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,312 |
| Countries Bordering India | 0 | - | 4.98 | 163,630 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,816 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,012 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,263 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,752 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,291 |
| European Cities by Clue | 0 | - | 4.70 | 89,110 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,047 |
| Islands by Country #2 | 0 | - | 4.80 | 77,632 |
