| Island Countries | 0 | - | 4.99 | 709,481 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,002 |
| European Countries by Clue | 0 | - | 4.92 | 183,434 |
| Countries by Military Spending | 0 | - | 4.93 | 177,286 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,661 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,289,982 |
| US States Quiz | 0 | - | 5.00 | 16,821,984 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,612,214 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,513 |
| World Capitals Quiz | 0 | - | 5.00 | 5,060,117 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,588 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,820,332 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,281 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,533,856 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,077 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,752,959 |
| Africa Map Quiz | 0 | - | 5.00 | 2,113,953 |
| All Country Flags of the World | 0 | - | 5.00 | 3,644,489 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,223 |
| Countries that Start with B | 0 | - | 4.95 | 2,289,687 |
| Countries that Start with A | 0 | - | 4.98 | 2,157,688 |
| Countries of Africa | 0 | - | 5.00 | 2,528,458 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,165 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,685,776 |
| South America Map Quiz | 0 | - | 5.00 | 1,546,828 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,241 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,540 |
| Countries that Start with S | 0 | - | 4.98 | 1,751,548 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,410 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,581,663 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,517 |
| Countries that Start with G | 0 | - | 4.97 | 1,499,712 |
| Countries that Start with M | 0 | - | 4.97 | 1,378,934 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,070 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,639 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,360 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,540 |
| Countries that Start with P | 0 | - | 4.94 | 1,213,725 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,351 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,230 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,244 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,238,983 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,300 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,228 |
| Random Country to Capital | 0 | - | 4.98 | 917,375 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,045 |
| Biggest Cities in the United States | 0 | - | 4.93 | 974,778 |
| Asia Map Quiz | 0 | - | 4.99 | 913,925 |
| Countries that Start with U | 0 | - | 4.97 | 902,984 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,970 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,019,896 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,314 |
| Counties of England | 0 | - | 4.97 | 794,318 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,889 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,128 |
| Top World Languages | 0 | - | 4.92 | 819,509 |
| Countries of South America | 0 | - | 5.00 | 922,120 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,354 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,628 |
| Countries that Start with K | 0 | - | 4.97 | 813,511 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,888 |
| US States with an Empty Map | 0 | - | 5.00 | 622,965 |
| Countries that Start with V | 0 | - | 4.98 | 608,088 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,171 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 412,302 |
| Flags of Asia Quiz | 0 | - | 4.99 | 610,973 |
| Countries that Start with D | 0 | - | 4.96 | 706,956 |
| Countries That Border Russia | 0 | - | 4.98 | 460,955 |
| One Border Countries | 0 | - | 4.98 | 467,343 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,182 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,193 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,771 |
| Countries with Four Letters | 0 | - | 4.99 | 421,303 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,708 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,696 |
| Countries Bordering France | 0 | - | 4.83 | 401,734 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,496 |
| Northernmost Countries | 0 | - | 4.99 | 360,190 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,812 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,421 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,495 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,477 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,973 |
| Landlocked Countries | 0 | - | 4.99 | 418,260 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,312 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,816 |
| Australia Map Quiz | 0 | - | 4.95 | 343,707 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,349 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,169 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,879 |
| Countries that Start with H | 0 | - | 4.96 | 602,532 |
| Countries that Start with J | 0 | - | 4.98 | 600,418 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,454 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,487 |
| "Land" Countries | 0 | - | 4.98 | 335,650 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,162 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,592 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,959 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,485 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,136 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,745 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,856 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,114 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 269,947 |
| Countries with Z | 0 | - | 4.98 | 289,670 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,363 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,262 |
| Flags of North and South America | 0 | - | 4.99 | 371,570 |
| EU Countries Quiz | 0 | - | 4.99 | 272,613 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,822 |
| Countries that Border China | 0 | - | 4.96 | 262,770 |
| French-Speaking Countries | 0 | - | 4.85 | 270,106 |
| Countries with Five Letters | 0 | - | 4.96 | 279,302 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,904 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,229 |
| Every Country Shape | 0 | - | 5.00 | 463,291 |
| Europe Capital to Country | 0 | - | 4.99 | 249,432 |
| Longest International Borders | 0 | - | 4.99 | 264,560 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,583 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,881 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,357 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,964 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,608 |
| Megacities on a World Map | 0 | - | 4.98 | 252,998 |
| World Currency Quiz | 0 | - | 4.91 | 301,615 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,377 |
| NATO Countries | 0 | - | 4.98 | 279,010 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,577 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,611 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,164 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,436 |
| Official Cities in the UK | 0 | - | 4.89 | 282,828 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,431 |
| Countries with the Highest Life Expectancy | 0 | - | 4.90 | 207,746 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,534 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,634 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,660 |
| Countries with Megacities | 0 | - | 4.99 | 249,995 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,915 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,294 |
| World Capitals by Map | 0 | - | 5.00 | 285,390 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,447 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,518 |
| World's Busiest Airports | 0 | - | 4.96 | 231,991 |
| Country Chain | 0 | - | 4.96 | 216,739 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,723 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,964 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,570 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,060 |
| Independence from Whom | 0 | - | 4.99 | 211,188 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,666 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,302 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,240 |
| Countries with Six Letters | 0 | - | 4.94 | 212,340 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,544 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,991 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,931 |
| Flags of Oceania | 0 | - | 5.00 | 257,894 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,731 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,041 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,430 |
| Countries Closest to Canada | 0 | - | 4.91 | 197,961 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,772 |
| Countries in their Native Language | 0 | - | 4.99 | 198,083 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,640 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,737 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,837 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,144 |
| Monarchies of the World | 0 | - | 4.94 | 167,847 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,640 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,679 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,269 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,624 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,527 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,482 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,584 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,909 |
| Countries That End in Y | 0 | - | 4.90 | 185,615 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,470 |
| Olympic Host Countries | 0 | - | 4.98 | 200,214 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,158 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,315 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,716 |
| Every European Country Shape | 0 | - | 4.96 | 201,199 |
| Countries of the Middle East | 0 | - | 4.96 | 200,641 |
| Countries by Official Language | 0 | - | 4.95 | 194,517 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,729 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,066 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,172 |
| Counties of Ireland | 0 | - | 4.92 | 194,484 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,483 |
| Countries Bordering India | 0 | - | 4.98 | 163,293 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,055 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,746 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,646 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,368 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,719 |
| European Cities by Clue | 0 | - | 4.70 | 88,991 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,108 |
| Islands by Country #2 | 0 | - | 4.80 | 77,292 |
