| Island Countries | 0 | - | 4.99 | 707,320 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,057 |
| European Countries by Clue | 0 | - | 4.92 | 182,309 |
| Countries by Military Spending | 0 | - | 4.93 | 176,289 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,208 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,865,369 |
| US States Quiz | 0 | - | 5.00 | 16,683,299 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,416 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,051 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,780 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,223 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,227 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,524 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,524,962 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,599 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,056 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,026 |
| All Country Flags of the World | 0 | - | 5.00 | 3,595,734 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,650 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,366 |
| Countries that Start with A | 0 | - | 4.98 | 2,145,079 |
| Countries of Africa | 0 | - | 5.00 | 2,505,153 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,415 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,383 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,489 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,086 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,096 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,468 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,809 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,472 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,784 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,734 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,489 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,540 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,748 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,542 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,422 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,817 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,580 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,776 |
| Countries that Start with N | 0 | - | 4.93 | 1,108,999 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,628 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,133 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,633 |
| Random Country to Capital | 0 | - | 4.98 | 910,742 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,591 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,401 |
| Asia Map Quiz | 0 | - | 4.99 | 906,089 |
| Countries that Start with U | 0 | - | 4.97 | 899,406 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,014 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,687 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,223 |
| Counties of England | 0 | - | 4.97 | 788,501 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,476 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,620 |
| Top World Languages | 0 | - | 4.92 | 812,194 |
| Countries of South America | 0 | - | 5.00 | 913,657 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,552 |
| Asia Capitals Quiz | 0 | - | 4.98 | 684,997 |
| Countries that Start with K | 0 | - | 4.96 | 808,758 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,950 |
| US States with an Empty Map | 0 | - | 5.00 | 618,278 |
| Countries that Start with V | 0 | - | 4.98 | 604,652 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,336 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,043 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,693 |
| Countries that Start with D | 0 | - | 4.96 | 700,712 |
| Countries That Border Russia | 0 | - | 4.98 | 458,620 |
| One Border Countries | 0 | - | 4.98 | 463,699 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,424 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,898 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,083 |
| Countries with Four Letters | 0 | - | 4.99 | 418,141 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,230 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,515 |
| Countries Bordering France | 0 | - | 4.85 | 397,295 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,281 |
| Northernmost Countries | 0 | - | 4.99 | 357,346 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,107 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,886 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,768 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,103 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,966 |
| Landlocked Countries | 0 | - | 4.99 | 413,013 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,921 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,098 |
| Australia Map Quiz | 0 | - | 4.94 | 342,270 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,546 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,317 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,094 |
| Countries that Start with H | 0 | - | 4.96 | 597,239 |
| Countries that Start with J | 0 | - | 4.98 | 595,319 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,030 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,555 |
| "Land" Countries | 0 | - | 4.98 | 333,466 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,275 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,604 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,417 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 293,994 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,181 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,433 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,597 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,108 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,800 |
| Countries with Z | 0 | - | 4.98 | 287,636 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,929 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,740 |
| Flags of North and South America | 0 | - | 4.99 | 365,953 |
| EU Countries Quiz | 0 | - | 4.99 | 269,539 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,019 |
| Countries that Border China | 0 | - | 4.96 | 261,718 |
| French-Speaking Countries | 0 | - | 4.85 | 268,648 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,527 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,101 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,587 |
| Every Country Shape | 0 | - | 5.00 | 458,146 |
| Europe Capital to Country | 0 | - | 4.99 | 247,335 |
| Longest International Borders | 0 | - | 4.99 | 263,404 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,800 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,724 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,205 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,476 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,703 |
| Megacities on a World Map | 0 | - | 4.98 | 250,550 |
| World Currency Quiz | 0 | - | 4.92 | 297,927 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,196 |
| NATO Countries | 0 | - | 4.98 | 275,250 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,824 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,890 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 223,942 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,300 |
| Official Cities in the UK | 0 | - | 4.89 | 280,241 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,924 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,127 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,157 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,267 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,340 |
| Countries with Megacities | 0 | - | 4.99 | 246,299 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,645 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,754 |
| World Capitals by Map | 0 | - | 5.00 | 282,903 |
| 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 | 210,123 |
| Country Chain | 0 | - | 4.96 | 215,594 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,253 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,454 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,510 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,803 |
| Independence from Whom | 0 | - | 4.99 | 209,523 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,400 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,535 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,416 |
| Countries with Six Letters | 0 | - | 4.93 | 210,227 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,493 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,423 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,200 |
| Flags of Oceania | 0 | - | 5.00 | 254,751 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,309 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,166 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,902 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,267 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,778 |
| Countries in their Native Language | 0 | - | 4.99 | 196,501 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,192 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,106 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,315 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,203 |
| Monarchies of the World | 0 | - | 4.94 | 166,423 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,449 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,605 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,281 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,844 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,020 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,041 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,809 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,587 |
| Countries That End in Y | 0 | - | 4.90 | 185,164 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,123 |
| Olympic Host Countries | 0 | - | 4.98 | 198,780 |
| 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 | 199,871 |
| Countries of the Middle East | 0 | - | 4.96 | 198,745 |
| Countries by Official Language | 0 | - | 4.95 | 192,618 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,133 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,978 |
| 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 | 179,332 |
| 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 | 125,380 |
| 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 |
