| Island Countries | 0 | - | 4.99 | 712,077 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,392 |
| European Countries by Clue | 0 | - | 4.92 | 184,055 |
| Countries by Military Spending | 0 | - | 4.93 | 178,840 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,253 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,781,466 |
| US States Quiz | 0 | - | 5.00 | 16,970,377 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,013 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,637 |
| World Capitals Quiz | 0 | - | 5.00 | 5,099,114 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,310 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,319 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,761 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,934 |
| Random Capital to Country | 0 | - | 4.99 | 2,599,246 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,298 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,646 |
| All Country Flags of the World | 0 | - | 5.00 | 3,703,094 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,878 |
| Countries that Start with B | 0 | - | 4.95 | 2,303,875 |
| Countries that Start with A | 0 | - | 4.98 | 2,172,887 |
| Countries of Africa | 0 | - | 5.00 | 2,554,602 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,392 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,962 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,765 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,446 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,515 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,370 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,276 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,825 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,453 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,728 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,871 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,400 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,171 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,439 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,247 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,795 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,293 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,246 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,520 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,749 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,494 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,167 |
| Random Country to Capital | 0 | - | 4.98 | 926,305 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,880 |
| Biggest Cities in the United States | 0 | - | 4.94 | 985,273 |
| Asia Map Quiz | 0 | - | 4.99 | 923,623 |
| Countries that Start with U | 0 | - | 4.97 | 907,689 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,278 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,545 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,808 |
| Counties of England | 0 | - | 4.97 | 801,702 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,472 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,325 |
| Top World Languages | 0 | - | 4.92 | 828,192 |
| Countries of South America | 0 | - | 5.00 | 930,934 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,594 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,714 |
| Countries that Start with K | 0 | - | 4.97 | 819,725 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,067 |
| US States with an Empty Map | 0 | - | 5.00 | 627,767 |
| Countries that Start with V | 0 | - | 4.98 | 611,429 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,365 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,904 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,694 |
| Countries that Start with D | 0 | - | 4.96 | 714,971 |
| Countries That Border Russia | 0 | - | 4.98 | 464,076 |
| One Border Countries | 0 | - | 4.98 | 471,329 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,083 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,250 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,978 |
| Countries with Four Letters | 0 | - | 4.99 | 425,148 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,107 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,798 |
| Countries Bordering France | 0 | - | 4.83 | 404,511 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,019 |
| Northernmost Countries | 0 | - | 4.99 | 363,410 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,872 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,309 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,474 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,370 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,746 |
| Landlocked Countries | 0 | - | 4.99 | 424,526 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,394 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,747 |
| Australia Map Quiz | 0 | - | 4.95 | 345,873 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,658 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,070 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,030 |
| Countries that Start with H | 0 | - | 4.96 | 608,546 |
| Countries that Start with J | 0 | - | 4.98 | 605,986 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,317 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,637 |
| "Land" Countries | 0 | - | 4.98 | 338,063 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,717 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,989 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,451 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,959 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,716 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,171 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,319 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,105 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,188 |
| Countries with Z | 0 | - | 4.98 | 292,138 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,310 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,780 |
| Flags of North and South America | 0 | - | 4.99 | 376,135 |
| EU Countries Quiz | 0 | - | 4.99 | 277,123 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,874 |
| Countries that Border China | 0 | - | 4.96 | 264,065 |
| French-Speaking Countries | 0 | - | 4.85 | 271,450 |
| Countries with Five Letters | 0 | - | 4.96 | 283,406 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,066 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,750 |
| Every Country Shape | 0 | - | 5.00 | 470,012 |
| Europe Capital to Country | 0 | - | 4.99 | 251,755 |
| Longest International Borders | 0 | - | 4.99 | 265,626 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,180 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,475 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,380 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,375 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,853 |
| Megacities on a World Map | 0 | - | 4.98 | 256,461 |
| World Currency Quiz | 0 | - | 4.92 | 305,992 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,005 |
| NATO Countries | 0 | - | 4.98 | 282,855 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,441 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,574 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,514 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,098 |
| Official Cities in the UK | 0 | - | 4.89 | 285,744 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,190 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,457 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,891 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,892 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,640 |
| Countries with Megacities | 0 | - | 4.99 | 266,416 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,336 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,106 |
| World Capitals by Map | 0 | - | 5.00 | 288,876 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,164 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,821 |
| World's Busiest Airports | 0 | - | 4.96 | 236,618 |
| Country Chain | 0 | - | 4.96 | 218,220 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,634 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,046 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,150 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,468 |
| Independence from Whom | 0 | - | 4.99 | 212,767 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,238 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,676 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,927 |
| Countries with Six Letters | 0 | - | 4.94 | 214,178 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,153 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,616 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,759 |
| Flags of Oceania | 0 | - | 5.00 | 262,058 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,456 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,126 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,119 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,948 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,019 |
| Countries in their Native Language | 0 | - | 4.99 | 199,557 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,157 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,385 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,762 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,299 |
| Monarchies of the World | 0 | - | 4.94 | 169,920 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,103 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,692 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,464 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,865 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,292 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,115 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,514 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,708 |
| Countries That End in Y | 0 | - | 4.91 | 186,029 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,401 |
| Olympic Host Countries | 0 | - | 4.98 | 201,708 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,237 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,113 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,511 |
| Every European Country Shape | 0 | - | 4.96 | 202,711 |
| Countries of the Middle East | 0 | - | 4.96 | 202,367 |
| Countries by Official Language | 0 | - | 4.95 | 195,774 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,638 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,013 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,971 |
| Counties of Ireland | 0 | - | 4.92 | 196,929 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,574 |
| Countries Bordering India | 0 | - | 4.98 | 163,750 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,966 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,103 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,445 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,885 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,383 |
| European Cities by Clue | 0 | - | 4.70 | 89,147 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,328 |
| Islands by Country #2 | 0 | - | 4.80 | 77,785 |
