| Island Countries | 0 | - | 4.99 | 711,058 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,873 |
| European Countries by Clue | 0 | - | 4.92 | 183,815 |
| Countries by Military Spending | 0 | - | 4.93 | 178,350 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,181 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,584,677 |
| US States Quiz | 0 | - | 5.00 | 16,914,927 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,282 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,332 |
| World Capitals Quiz | 0 | - | 5.00 | 5,083,389 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,401 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,821 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,713 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,862 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,472 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,902 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,477 |
| All Country Flags of the World | 0 | - | 5.00 | 3,679,164 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,258 |
| Countries that Start with B | 0 | - | 4.95 | 2,297,839 |
| Countries that Start with A | 0 | - | 4.98 | 2,166,432 |
| Countries of Africa | 0 | - | 5.00 | 2,544,380 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,619 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,692,619 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,623 |
| Countries that Start with C | 0 | - | 4.96 | 1,824,831 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,762 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,386 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,214 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,550 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,370 |
| Countries that Start with G | 0 | - | 4.97 | 1,505,783 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,680 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,516 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,575 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,902 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,138 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,946 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,899 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,195 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,542 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,240 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,503 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,007 |
| Random Country to Capital | 0 | - | 4.98 | 922,679 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,198 |
| Biggest Cities in the United States | 0 | - | 4.94 | 980,943 |
| Asia Map Quiz | 0 | - | 4.99 | 919,381 |
| Countries that Start with U | 0 | - | 4.97 | 905,607 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,924 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,635 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,338 |
| Counties of England | 0 | - | 4.97 | 798,734 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,582 |
| Oceania Map Quiz | 0 | - | 4.98 | 647,905 |
| Top World Languages | 0 | - | 4.92 | 824,265 |
| Countries of South America | 0 | - | 5.00 | 927,393 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,605 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,629 |
| Countries that Start with K | 0 | - | 4.97 | 817,297 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,106 |
| US States with an Empty Map | 0 | - | 5.00 | 625,910 |
| Countries that Start with V | 0 | - | 4.98 | 610,113 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,795 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,361 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,725 |
| Countries that Start with D | 0 | - | 4.96 | 711,636 |
| Countries That Border Russia | 0 | - | 4.98 | 462,779 |
| One Border Countries | 0 | - | 4.98 | 469,886 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,357 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,480 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,275 |
| Countries with Four Letters | 0 | - | 4.99 | 423,298 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,094 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,519 |
| Countries Bordering France | 0 | - | 4.83 | 403,503 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,981 |
| Northernmost Countries | 0 | - | 4.99 | 361,969 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,003 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,502 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,619 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,778 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,126 |
| Landlocked Countries | 0 | - | 4.99 | 421,999 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,985 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,958 |
| Australia Map Quiz | 0 | - | 4.95 | 345,086 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,740 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,701 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,506 |
| Countries that Start with H | 0 | - | 4.96 | 606,160 |
| Countries that Start with J | 0 | - | 4.98 | 603,767 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,096 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,919 |
| "Land" Countries | 0 | - | 4.98 | 337,345 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,285 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,394 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,573 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,415 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,083 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,040 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,198 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,665 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,526 |
| Countries with Z | 0 | - | 4.98 | 291,441 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,379 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,191 |
| Flags of North and South America | 0 | - | 4.99 | 374,219 |
| EU Countries Quiz | 0 | - | 4.99 | 275,494 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,979 |
| Countries that Border China | 0 | - | 4.96 | 263,534 |
| French-Speaking Countries | 0 | - | 4.85 | 270,852 |
| Countries with Five Letters | 0 | - | 4.96 | 282,456 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,454 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,297 |
| Every Country Shape | 0 | - | 5.00 | 467,353 |
| Europe Capital to Country | 0 | - | 4.99 | 250,840 |
| Longest International Borders | 0 | - | 4.99 | 265,204 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,435 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,953 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,588 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,809 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,266 |
| Megacities on a World Map | 0 | - | 4.98 | 255,310 |
| World Currency Quiz | 0 | - | 4.92 | 304,148 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,099 |
| NATO Countries | 0 | - | 4.98 | 281,524 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,109 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,769 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,981 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,276 |
| Official Cities in the UK | 0 | - | 4.89 | 284,468 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,484 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,126 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,335 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,345 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,220 |
| Countries with Megacities | 0 | - | 4.99 | 264,577 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,735 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,315 |
| World Capitals by Map | 0 | - | 5.00 | 287,406 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,879 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,430 |
| World's Busiest Airports | 0 | - | 4.96 | 234,849 |
| Country Chain | 0 | - | 4.96 | 217,387 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,817 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,795 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,322 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,027 |
| Independence from Whom | 0 | - | 4.99 | 212,101 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,736 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,190 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,641 |
| Countries with Six Letters | 0 | - | 4.94 | 213,546 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,907 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,388 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,006 |
| Flags of Oceania | 0 | - | 5.00 | 260,433 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,796 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,686 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,831 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,585 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,734 |
| Countries in their Native Language | 0 | - | 4.99 | 199,046 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,321 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,770 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,523 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,911 |
| Monarchies of the World | 0 | - | 4.94 | 169,215 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,693 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,750 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,961 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,523 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,595 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,943 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,098 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,549 |
| Countries That End in Y | 0 | - | 4.91 | 185,870 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,784 |
| Olympic Host Countries | 0 | - | 4.98 | 201,092 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,195 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,635 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,184 |
| Every European Country Shape | 0 | - | 4.96 | 202,166 |
| Countries of the Middle East | 0 | - | 4.96 | 201,640 |
| Countries by Official Language | 0 | - | 4.95 | 195,252 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,120 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,642 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,762 |
| Counties of Ireland | 0 | - | 4.92 | 196,022 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,162 |
| Countries Bordering India | 0 | - | 4.98 | 163,550 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,748 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,964 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,141 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,681 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,237 |
| European Cities by Clue | 0 | - | 4.70 | 89,092 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,244 |
| Islands by Country #2 | 0 | - | 4.80 | 77,545 |
