| Island Countries | 0 | - | 4.99 | 711,417 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,063 |
| European Countries by Clue | 0 | - | 4.92 | 183,918 |
| Countries by Military Spending | 0 | - | 4.93 | 178,579 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,581 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,662,974 |
| US States Quiz | 0 | - | 5.00 | 16,937,323 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,638,154 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,246 |
| World Capitals Quiz | 0 | - | 5.00 | 5,089,565 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,295 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,658 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,197 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,541,507 |
| Random Capital to Country | 0 | - | 4.99 | 2,596,312 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,819 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,518 |
| All Country Flags of the World | 0 | - | 5.00 | 3,688,298 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,107,504 |
| Countries that Start with B | 0 | - | 4.95 | 2,300,050 |
| Countries that Start with A | 0 | - | 4.98 | 2,168,937 |
| Countries of Africa | 0 | - | 5.00 | 2,548,398 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,242 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,358 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,649 |
| Countries that Start with C | 0 | - | 4.96 | 1,826,621 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,439 |
| Countries that Start with S | 0 | - | 4.98 | 1,758,945 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,852 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,593,166 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,483 |
| Countries that Start with G | 0 | - | 4.97 | 1,507,279 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,928 |
| Countries that Start with E | 0 | - | 4.95 | 1,381,023 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,003 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,253 |
| Countries that Start with I | 0 | - | 4.92 | 1,291,355 |
| Countries that Start with P | 0 | - | 4.94 | 1,219,047 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,146 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,987 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,715 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,813 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,664 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,467 |
| Random Country to Capital | 0 | - | 4.98 | 924,023 |
| Countries that Start with T | 0 | - | 4.90 | 1,012,037 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,473 |
| Asia Map Quiz | 0 | - | 4.99 | 921,228 |
| Countries that Start with U | 0 | - | 4.97 | 906,258 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,698 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,152 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,881 |
| Counties of England | 0 | - | 4.97 | 800,008 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,324 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,313 |
| Top World Languages | 0 | - | 4.92 | 825,867 |
| Countries of South America | 0 | - | 5.00 | 928,768 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,871 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,747 |
| Countries that Start with K | 0 | - | 4.97 | 818,207 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,527 |
| US States with an Empty Map | 0 | - | 5.00 | 626,611 |
| Countries that Start with V | 0 | - | 4.98 | 610,604 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,371 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,555 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,927 |
| Countries that Start with D | 0 | - | 4.96 | 712,948 |
| Countries That Border Russia | 0 | - | 4.98 | 463,315 |
| One Border Countries | 0 | - | 4.98 | 470,454 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,647 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,207 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,982 |
| Countries with Four Letters | 0 | - | 4.99 | 423,898 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,480 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,005 |
| Countries Bordering France | 0 | - | 4.83 | 403,922 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,380 |
| Northernmost Countries | 0 | - | 4.99 | 362,480 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,376 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,834 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,984 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,989 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,381 |
| Landlocked Countries | 0 | - | 4.99 | 423,003 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,630 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,258 |
| Australia Map Quiz | 0 | - | 4.95 | 345,463 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,091 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,287 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,102 |
| Countries that Start with H | 0 | - | 4.96 | 607,082 |
| Countries that Start with J | 0 | - | 4.98 | 604,631 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,565 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,201 |
| "Land" Countries | 0 | - | 4.98 | 337,631 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,447 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,651 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,348 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,623 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,340 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,351 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,740 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,857 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,191 |
| Countries with Z | 0 | - | 4.98 | 291,723 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,669 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,430 |
| Flags of North and South America | 0 | - | 4.99 | 374,966 |
| EU Countries Quiz | 0 | - | 4.99 | 276,142 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,309 |
| Countries that Border China | 0 | - | 4.96 | 263,725 |
| French-Speaking Countries | 0 | - | 4.85 | 271,092 |
| Countries with Five Letters | 0 | - | 4.96 | 282,902 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,750 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,830 |
| Every Country Shape | 0 | - | 5.00 | 468,483 |
| Europe Capital to Country | 0 | - | 4.99 | 251,222 |
| Longest International Borders | 0 | - | 4.99 | 265,383 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,101 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,181 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,496 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,091 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,533 |
| Megacities on a World Map | 0 | - | 4.98 | 255,744 |
| World Currency Quiz | 0 | - | 4.92 | 304,888 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,306 |
| NATO Countries | 0 | - | 4.98 | 282,030 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,235 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,074 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,205 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,710 |
| Official Cities in the UK | 0 | - | 4.89 | 284,948 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,745 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,264 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,551 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,559 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,403 |
| Countries with Megacities | 0 | - | 4.99 | 265,289 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,001 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,623 |
| World Capitals by Map | 0 | - | 5.00 | 288,008 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,994 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,602 |
| World's Busiest Airports | 0 | - | 4.96 | 235,580 |
| Country Chain | 0 | - | 4.96 | 217,811 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,147 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,281 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,749 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,211 |
| Independence from Whom | 0 | - | 4.99 | 212,329 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,938 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,390 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,748 |
| Countries with Six Letters | 0 | - | 4.94 | 213,808 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,990 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,476 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,272 |
| Flags of Oceania | 0 | - | 5.00 | 261,050 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,047 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,871 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,937 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,724 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,260 |
| Countries in their Native Language | 0 | - | 4.99 | 199,240 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,523 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,999 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,620 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,056 |
| Monarchies of the World | 0 | - | 4.94 | 169,502 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,857 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,958 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,082 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,679 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,881 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,994 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,244 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,943 |
| Countries That End in Y | 0 | - | 4.91 | 185,942 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,012 |
| Olympic Host Countries | 0 | - | 4.98 | 201,319 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,559 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,847 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,313 |
| Every European Country Shape | 0 | - | 4.96 | 202,388 |
| Countries of the Middle East | 0 | - | 4.96 | 201,921 |
| Countries by Official Language | 0 | - | 4.95 | 195,466 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,224 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,802 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,859 |
| Counties of Ireland | 0 | - | 4.92 | 196,355 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,317 |
| Countries Bordering India | 0 | - | 4.98 | 163,636 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,819 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,012 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,266 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,753 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,292 |
| European Cities by Clue | 0 | - | 4.70 | 89,111 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,070 |
| Islands by Country #2 | 0 | - | 4.80 | 77,638 |
