| Island Countries | 0 | - | 4.99 | 707,526 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,162 |
| European Countries by Clue | 0 | - | 4.92 | 182,347 |
| Countries by Military Spending | 0 | - | 4.93 | 176,368 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,409 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,901,155 |
| US States Quiz | 0 | - | 5.00 | 16,695,415 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,712 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,283 |
| World Capitals Quiz | 0 | - | 5.00 | 5,030,054 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,320 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,155 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,664 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,976 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,605 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,608 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,924 |
| All Country Flags of the World | 0 | - | 5.00 | 3,600,174 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,597 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,399 |
| Countries that Start with A | 0 | - | 4.97 | 2,146,279 |
| Countries of Africa | 0 | - | 5.00 | 2,506,968 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,488 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,277 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,991 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,923 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,665 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,195 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,657 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,562 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,523 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,457 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,073 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,216 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,509 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,733 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,039 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,327 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,186 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,221 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,504 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,054 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,646 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,056 |
| Random Country to Capital | 0 | - | 4.98 | 911,397 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,034 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,266 |
| Asia Map Quiz | 0 | - | 4.99 | 906,778 |
| Countries that Start with U | 0 | - | 4.97 | 899,790 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,994 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,363 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,538 |
| Counties of England | 0 | - | 4.97 | 788,981 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,800 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,133 |
| Top World Languages | 0 | - | 4.92 | 812,829 |
| Countries of South America | 0 | - | 5.00 | 914,322 |
| Africa Capitals Quiz | 0 | - | 4.99 | 730,009 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,656 |
| Countries that Start with K | 0 | - | 4.97 | 809,214 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,080 |
| US States with an Empty Map | 0 | - | 5.00 | 618,634 |
| Countries that Start with V | 0 | - | 4.98 | 604,960 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,677 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,135 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,305 |
| Countries that Start with D | 0 | - | 4.96 | 701,276 |
| Countries That Border Russia | 0 | - | 4.98 | 458,830 |
| One Border Countries | 0 | - | 4.98 | 464,228 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,736 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,134 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,720 |
| Countries with Four Letters | 0 | - | 4.99 | 418,415 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,509 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,694 |
| Countries Bordering France | 0 | - | 4.83 | 398,718 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,525 |
| Northernmost Countries | 0 | - | 4.99 | 357,602 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,257 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,049 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,969 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,215 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,058 |
| Landlocked Countries | 0 | - | 4.99 | 413,384 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,107 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,292 |
| Australia Map Quiz | 0 | - | 4.94 | 342,429 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,712 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,512 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,402 |
| Countries that Start with H | 0 | - | 4.96 | 597,731 |
| Countries that Start with J | 0 | - | 4.98 | 595,812 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,280 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,787 |
| "Land" Countries | 0 | - | 4.98 | 333,582 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,353 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,668 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,756 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,287 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,456 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,073 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,769 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,200 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,016 |
| Countries with Z | 0 | - | 4.98 | 287,821 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,057 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,857 |
| Flags of North and South America | 0 | - | 4.99 | 366,885 |
| EU Countries Quiz | 0 | - | 4.99 | 269,804 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,195 |
| Countries that Border China | 0 | - | 4.96 | 261,791 |
| French-Speaking Countries | 0 | - | 4.85 | 268,752 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,632 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,199 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,828 |
| Every Country Shape | 0 | - | 5.00 | 458,711 |
| Europe Capital to Country | 0 | - | 4.99 | 247,556 |
| Longest International Borders | 0 | - | 4.99 | 263,510 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,153 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,816 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,593 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,599 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,790 |
| Megacities on a World Map | 0 | - | 4.98 | 250,872 |
| World Currency Quiz | 0 | - | 4.92 | 298,295 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,296 |
| NATO Countries | 0 | - | 4.98 | 275,582 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,877 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,069 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,181 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,396 |
| Official Cities in the UK | 0 | - | 4.89 | 280,450 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,072 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,188 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,251 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,371 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,423 |
| Countries with Megacities | 0 | - | 4.99 | 246,636 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,736 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,873 |
| World Capitals by Map | 0 | - | 5.00 | 283,114 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,908 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,342 |
| World's Busiest Airports | 0 | - | 4.94 | 210,335 |
| Country Chain | 0 | - | 4.96 | 215,683 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,350 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,707 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,586 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,894 |
| Independence from Whom | 0 | - | 4.99 | 209,626 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,776 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,614 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,554 |
| Countries with Six Letters | 0 | - | 4.93 | 210,303 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,569 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,464 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,356 |
| Flags of Oceania | 0 | - | 5.00 | 255,053 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,418 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,912 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,945 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,332 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,054 |
| Countries in their Native Language | 0 | - | 4.99 | 196,589 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,277 |
| World Map without 12 Countries #2 | 0 | - | 4.97 | 171,263 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,366 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,330 |
| Monarchies of the World | 0 | - | 4.94 | 166,557 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,513 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,707 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,367 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,981 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,133 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,066 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,883 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,786 |
| Countries That End in Y | 0 | - | 4.90 | 185,188 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,207 |
| Olympic Host Countries | 0 | - | 4.98 | 198,851 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,669 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,889 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,085 |
| Every European Country Shape | 0 | - | 4.96 | 200,094 |
| Countries of the Middle East | 0 | - | 4.96 | 198,857 |
| Countries by Official Language | 0 | - | 4.95 | 192,723 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,180 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,050 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,711 |
| Counties of Ireland | 0 | - | 4.92 | 192,994 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,408 |
| Countries Bordering India | 0 | - | 4.98 | 162,582 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,634 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,489 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,624 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,614 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,409 |
| European Cities by Clue | 0 | - | 4.70 | 88,795 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,942 |
| Islands by Country #2 | 0 | - | 4.80 | 76,975 |
