| Island Countries | 0 | - | 4.99 | 707,517 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,155 |
| European Countries by Clue | 0 | - | 4.92 | 182,345 |
| Countries by Military Spending | 0 | - | 4.93 | 176,358 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,391 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,899,280 |
| US States Quiz | 0 | - | 5.00 | 16,694,774 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,614 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,243 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,883 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,213 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,035 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,613 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,928 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,569 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,399 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,868 |
| All Country Flags of the World | 0 | - | 5.00 | 3,599,943 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,565 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,346 |
| Countries that Start with A | 0 | - | 4.97 | 2,146,208 |
| Countries of Africa | 0 | - | 5.00 | 2,506,859 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,468 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,256 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,966 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,872 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,635 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,156 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,612 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,488 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,431 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,411 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,040 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,170 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,473 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,715 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,008 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,299 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,146 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,196 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,464 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,961 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,613 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,035 |
| Random Country to Capital | 0 | - | 4.98 | 911,381 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,009 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,240 |
| Asia Map Quiz | 0 | - | 4.99 | 906,749 |
| Countries that Start with U | 0 | - | 4.97 | 899,774 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,912 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,305 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,518 |
| Counties of England | 0 | - | 4.97 | 788,956 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,794 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,107 |
| Top World Languages | 0 | - | 4.92 | 812,805 |
| Countries of South America | 0 | - | 5.00 | 914,274 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,983 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,623 |
| Countries that Start with K | 0 | - | 4.97 | 809,189 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,070 |
| US States with an Empty Map | 0 | - | 5.00 | 618,611 |
| Countries that Start with V | 0 | - | 4.98 | 604,941 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,663 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,132 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,270 |
| Countries that Start with D | 0 | - | 4.96 | 701,238 |
| Countries That Border Russia | 0 | - | 4.98 | 458,819 |
| One Border Countries | 0 | - | 4.98 | 464,205 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,722 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,123 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,692 |
| Countries with Four Letters | 0 | - | 4.99 | 418,398 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,487 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,679 |
| Countries Bordering France | 0 | - | 4.83 | 398,661 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,507 |
| Northernmost Countries | 0 | - | 4.99 | 357,586 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,248 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,035 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,955 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,214 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,046 |
| Landlocked Countries | 0 | - | 4.99 | 413,368 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,087 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,283 |
| Australia Map Quiz | 0 | - | 4.94 | 342,420 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,707 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,499 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,382 |
| Countries that Start with H | 0 | - | 4.96 | 597,701 |
| Countries that Start with J | 0 | - | 4.98 | 595,780 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,267 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,774 |
| "Land" Countries | 0 | - | 4.98 | 333,572 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,346 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,667 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,742 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,270 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,448 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,047 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,761 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,193 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,998 |
| Countries with Z | 0 | - | 4.98 | 287,806 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,049 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,846 |
| Flags of North and South America | 0 | - | 4.99 | 366,857 |
| EU Countries Quiz | 0 | - | 4.99 | 269,788 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,179 |
| Countries that Border China | 0 | - | 4.96 | 261,789 |
| French-Speaking Countries | 0 | - | 4.85 | 268,744 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,624 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,196 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,815 |
| Every Country Shape | 0 | - | 5.00 | 458,686 |
| Europe Capital to Country | 0 | - | 4.99 | 247,513 |
| Longest International Borders | 0 | - | 4.99 | 263,504 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,138 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,809 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,564 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,595 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,784 |
| Megacities on a World Map | 0 | - | 4.98 | 250,851 |
| World Currency Quiz | 0 | - | 4.92 | 298,282 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,286 |
| NATO Countries | 0 | - | 4.98 | 275,563 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,873 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,058 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,167 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,389 |
| Official Cities in the UK | 0 | - | 4.89 | 280,435 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,064 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,185 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,243 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,367 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,414 |
| Countries with Megacities | 0 | - | 4.99 | 246,607 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,732 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,868 |
| World Capitals by Map | 0 | - | 5.00 | 283,109 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,906 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,338 |
| World's Busiest Airports | 0 | - | 4.94 | 210,319 |
| Country Chain | 0 | - | 4.96 | 215,676 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,338 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,681 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,583 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,880 |
| Independence from Whom | 0 | - | 4.99 | 209,620 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,750 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,611 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,546 |
| Countries with Six Letters | 0 | - | 4.93 | 210,298 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,566 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,461 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,349 |
| Flags of Oceania | 0 | - | 5.00 | 255,036 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,411 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,905 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,942 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,328 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,035 |
| Countries in their Native Language | 0 | - | 4.99 | 196,583 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,266 |
| World Map without 12 Countries #2 | 0 | - | 4.97 | 171,259 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,360 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,323 |
| Monarchies of the World | 0 | - | 4.94 | 166,548 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,510 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,703 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,361 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,975 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,131 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,065 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,879 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,780 |
| Countries That End in Y | 0 | - | 4.90 | 185,186 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,201 |
| Olympic Host Countries | 0 | - | 4.98 | 198,845 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,662 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,889 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,081 |
| Every European Country Shape | 0 | - | 4.96 | 200,091 |
| Countries of the Middle East | 0 | - | 4.96 | 198,851 |
| Countries by Official Language | 0 | - | 4.95 | 192,716 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,179 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,047 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,707 |
| Counties of Ireland | 0 | - | 4.92 | 192,979 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,407 |
| Countries Bordering India | 0 | - | 4.98 | 162,579 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,632 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,488 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,624 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,612 |
| 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 | 76,974 |
