| Island Countries | 0 | - | 4.99 | 708,699 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,513 |
| European Countries by Clue | 0 | - | 4.92 | 183,230 |
| Countries by Military Spending | 0 | - | 4.93 | 176,921 |
| Countries by Three Words #2 | 0 | - | 4.97 | 200,878 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,136,521 |
| US States Quiz | 0 | - | 5.00 | 16,771,869 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,449 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,710 |
| World Capitals Quiz | 0 | - | 5.00 | 5,048,265 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,235 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,058 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,629 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,530,744 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,634 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,177 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,059 |
| All Country Flags of the World | 0 | - | 5.00 | 3,626,715 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,792 |
| Countries that Start with B | 0 | - | 4.95 | 2,285,435 |
| Countries that Start with A | 0 | - | 4.98 | 2,153,107 |
| Countries of Africa | 0 | - | 5.00 | 2,519,853 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,694 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,682,436 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,151 |
| Countries that Start with C | 0 | - | 4.96 | 1,814,771 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,378,915 |
| Countries that Start with S | 0 | - | 4.98 | 1,748,421 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,415 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,051 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,550 |
| Countries that Start with G | 0 | - | 4.97 | 1,496,714 |
| Countries that Start with M | 0 | - | 4.97 | 1,376,540 |
| Countries that Start with E | 0 | - | 4.95 | 1,371,173 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,130 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,664 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,261 |
| Countries that Start with P | 0 | - | 4.94 | 1,211,585 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,923 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,515 |
| Countries that Start with N | 0 | - | 4.93 | 1,112,744 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,792 |
| Countries that Start with L | 0 | - | 4.98 | 1,085,774 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,413 |
| Random Country to Capital | 0 | - | 4.98 | 914,650 |
| Countries that Start with T | 0 | - | 4.90 | 1,006,370 |
| Biggest Cities in the United States | 0 | - | 4.93 | 971,385 |
| Asia Map Quiz | 0 | - | 4.99 | 910,500 |
| Countries that Start with U | 0 | - | 4.97 | 901,682 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,060 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,705 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,164 |
| Counties of England | 0 | - | 4.97 | 792,170 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,678 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,224 |
| Top World Languages | 0 | - | 4.92 | 816,821 |
| Countries of South America | 0 | - | 5.00 | 919,206 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,311 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,726 |
| Countries that Start with K | 0 | - | 4.97 | 811,727 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,122 |
| US States with an Empty Map | 0 | - | 5.00 | 621,157 |
| Countries that Start with V | 0 | - | 4.98 | 606,733 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,881 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,825 |
| Flags of Asia Quiz | 0 | - | 4.99 | 608,659 |
| Countries that Start with D | 0 | - | 4.96 | 704,612 |
| Countries That Border Russia | 0 | - | 4.98 | 460,204 |
| One Border Countries | 0 | - | 4.98 | 466,235 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,651 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,966 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,517 |
| Countries with Four Letters | 0 | - | 4.99 | 420,126 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,943 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,876 |
| Countries Bordering France | 0 | - | 4.83 | 400,998 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,717 |
| Northernmost Countries | 0 | - | 4.99 | 359,200 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,121 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,676 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,908 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,071 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,588 |
| Landlocked Countries | 0 | - | 4.99 | 416,317 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,415 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,235 |
| Australia Map Quiz | 0 | - | 4.94 | 343,185 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,729 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,220 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,599 |
| Countries that Start with H | 0 | - | 4.96 | 600,509 |
| Countries that Start with J | 0 | - | 4.98 | 598,541 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,580 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,841 |
| "Land" Countries | 0 | - | 4.98 | 334,397 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,857 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 288,085 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,674 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,116 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,330 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,496 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,181 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,812 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,090 |
| Countries with Z | 0 | - | 4.98 | 288,531 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,394 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,832 |
| Flags of North and South America | 0 | - | 4.99 | 369,847 |
| EU Countries Quiz | 0 | - | 4.99 | 271,416 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,217 |
| Countries that Border China | 0 | - | 4.96 | 262,433 |
| French-Speaking Countries | 0 | - | 4.85 | 269,670 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,336 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,597 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,193 |
| Every Country Shape | 0 | - | 5.00 | 461,402 |
| Europe Capital to Country | 0 | - | 4.99 | 248,769 |
| Longest International Borders | 0 | - | 4.99 | 264,249 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,160 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,234 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,558 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,432 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,240 |
| Megacities on a World Map | 0 | - | 4.98 | 252,211 |
| World Currency Quiz | 0 | - | 4.92 | 300,287 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,996 |
| NATO Countries | 0 | - | 4.98 | 277,863 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,231 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,986 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,823 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,079 |
| Official Cities in the UK | 0 | - | 4.89 | 281,848 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,829 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,530 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,176 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,177 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,932 |
| Countries with Megacities | 0 | - | 4.99 | 248,750 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,497 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,654 |
| World Capitals by Map | 0 | - | 5.00 | 284,650 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,250 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,200 |
| World's Busiest Airports | 0 | - | 4.95 | 226,516 |
| Country Chain | 0 | - | 4.96 | 216,366 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,172 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,119 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,154 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,411 |
| Independence from Whom | 0 | - | 4.99 | 210,510 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,243 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,003 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,016 |
| Countries with Six Letters | 0 | - | 4.93 | 210,934 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,879 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,725 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,143 |
| Flags of Oceania | 0 | - | 5.00 | 256,774 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,166 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,651 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,246 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,693 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,716 |
| Countries in their Native Language | 0 | - | 4.99 | 197,542 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,845 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,299 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,674 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,767 |
| Monarchies of the World | 0 | - | 4.94 | 167,331 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,910 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,289 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,957 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,376 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,985 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,361 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,304 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,079 |
| Countries That End in Y | 0 | - | 4.90 | 185,354 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,999 |
| Olympic Host Countries | 0 | - | 4.98 | 199,438 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,610 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,158 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,471 |
| Every European Country Shape | 0 | - | 4.96 | 200,763 |
| Countries of the Middle East | 0 | - | 4.96 | 199,764 |
| Countries by Official Language | 0 | - | 4.95 | 193,899 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,526 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,766 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,984 |
| Counties of Ireland | 0 | - | 4.92 | 193,933 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,838 |
| Countries Bordering India | 0 | - | 4.98 | 163,179 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,907 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,629 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,407 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,846 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,614 |
| European Cities by Clue | 0 | - | 4.70 | 88,944 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,053 |
| Islands by Country #2 | 0 | - | 4.80 | 77,163 |
