| Island Countries | 0 | - | 4.99 | 707,322 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,059 |
| European Countries by Clue | 0 | - | 4.92 | 182,310 |
| Countries by Military Spending | 0 | - | 4.93 | 176,290 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,210 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,865,785 |
| US States Quiz | 0 | - | 5.00 | 16,683,449 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,442 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,075 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,812 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,236 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,268 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,541 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,524,974 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,619 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,096 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,029 |
| All Country Flags of the World | 0 | - | 5.00 | 3,595,796 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,661 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,379 |
| Countries that Start with A | 0 | - | 4.98 | 2,145,090 |
| Countries of Africa | 0 | - | 5.00 | 2,505,165 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,419 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,409 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,492 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,096 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,105 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,470 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,814 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,485 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,804 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,741 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,498 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,548 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,754 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,542 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,429 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,822 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,585 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,782 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,006 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,645 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,144 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,639 |
| Random Country to Capital | 0 | - | 4.98 | 910,745 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,595 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,412 |
| Asia Map Quiz | 0 | - | 4.99 | 906,095 |
| Countries that Start with U | 0 | - | 4.97 | 899,420 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,016 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,687 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,226 |
| Counties of England | 0 | - | 4.97 | 788,512 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,479 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,621 |
| Top World Languages | 0 | - | 4.92 | 812,203 |
| Countries of South America | 0 | - | 5.00 | 913,660 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,555 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,002 |
| Countries that Start with K | 0 | - | 4.96 | 808,767 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,951 |
| US States with an Empty Map | 0 | - | 5.00 | 618,285 |
| Countries that Start with V | 0 | - | 4.98 | 604,656 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,341 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,043 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,700 |
| Countries that Start with D | 0 | - | 4.96 | 700,721 |
| Countries That Border Russia | 0 | - | 4.98 | 458,620 |
| One Border Countries | 0 | - | 4.98 | 463,702 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,427 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,899 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,084 |
| Countries with Four Letters | 0 | - | 4.99 | 418,147 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,230 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,516 |
| Countries Bordering France | 0 | - | 4.85 | 397,329 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,284 |
| Northernmost Countries | 0 | - | 4.99 | 357,347 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,109 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,887 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,771 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,105 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,980 |
| Landlocked Countries | 0 | - | 4.99 | 413,018 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,921 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,102 |
| Australia Map Quiz | 0 | - | 4.94 | 342,270 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,550 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,320 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,098 |
| Countries that Start with H | 0 | - | 4.96 | 597,246 |
| Countries that Start with J | 0 | - | 4.98 | 595,326 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,036 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,556 |
| "Land" Countries | 0 | - | 4.98 | 333,466 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,276 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,605 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,421 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 293,998 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,182 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,438 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,600 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,109 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,803 |
| Countries with Z | 0 | - | 4.98 | 287,646 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,929 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,743 |
| Flags of North and South America | 0 | - | 4.99 | 365,963 |
| EU Countries Quiz | 0 | - | 4.99 | 269,548 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,021 |
| Countries that Border China | 0 | - | 4.96 | 261,719 |
| French-Speaking Countries | 0 | - | 4.85 | 268,648 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,528 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,102 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,588 |
| Every Country Shape | 0 | - | 5.00 | 458,153 |
| Europe Capital to Country | 0 | - | 4.99 | 247,336 |
| Longest International Borders | 0 | - | 4.99 | 263,404 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,803 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,724 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,211 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,477 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,704 |
| Megacities on a World Map | 0 | - | 4.98 | 250,559 |
| World Currency Quiz | 0 | - | 4.92 | 297,928 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,197 |
| NATO Countries | 0 | - | 4.98 | 275,254 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,824 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,895 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 223,945 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,300 |
| Official Cities in the UK | 0 | - | 4.89 | 280,248 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,925 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,128 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,157 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,269 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,340 |
| Countries with Megacities | 0 | - | 4.99 | 246,301 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,645 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,755 |
| World Capitals by Map | 0 | - | 5.00 | 282,911 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,845 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,274 |
| World's Busiest Airports | 0 | - | 4.94 | 210,128 |
| Country Chain | 0 | - | 4.96 | 215,595 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,254 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,456 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,510 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,805 |
| Independence from Whom | 0 | - | 4.99 | 209,524 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,401 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,538 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,417 |
| Countries with Six Letters | 0 | - | 4.93 | 210,227 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,494 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,424 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,201 |
| Flags of Oceania | 0 | - | 5.00 | 254,754 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,311 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,167 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,903 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,267 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,780 |
| Countries in their Native Language | 0 | - | 4.99 | 196,502 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,192 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,107 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,316 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,203 |
| Monarchies of the World | 0 | - | 4.94 | 166,425 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,450 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,608 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,282 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,847 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,021 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,043 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,809 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,588 |
| Countries That End in Y | 0 | - | 4.90 | 185,164 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,126 |
| Olympic Host Countries | 0 | - | 4.98 | 198,781 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,550 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,854 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,026 |
| Every European Country Shape | 0 | - | 4.95 | 199,877 |
| Countries of the Middle East | 0 | - | 4.96 | 198,745 |
| Countries by Official Language | 0 | - | 4.95 | 192,620 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,133 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,979 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,652 |
| Counties of Ireland | 0 | - | 4.92 | 192,851 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,334 |
| Countries Bordering India | 0 | - | 4.98 | 162,547 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,596 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,462 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,566 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,562 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,381 |
| European Cities by Clue | 0 | - | 4.70 | 88,772 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,929 |
| Islands by Country #2 | 0 | - | 4.80 | 76,947 |
