| 550 | European Countries with the Letter "O" |
| 550 | Country Superlatives by Letter - C |
| 549 | Country and Capital with Same Amount of Letters |
| 548 | Most Populated Country Beginning with the Letters of JETPUNK |
| 539 | African Countries by Letter - A |
| 534 | 15 Countries Containing an Unknown Letter |
| 520 | Letters In The Middle: Countries |
| 514 | Countries Containing These Three Letters #3 |
| 496 | European Countries with the Letter I |
| 491 | Majority Muslim Countries A-Z |
| 478 | Country Superlatives by Letter - I |
| 477 | Click the 3-Letter American Country Code |
| 462 | Longest Country Names with No Repeated Letters |
| 458 | Most Common First Six Letters of Countries |
| 453 | Asian Countries by Letter - A |
| 440 | Countries with Five Letters - World Map Sudden Death |
| 431 | Unique Countries: by 1st-2nd-3rd-4th-5th-6th Letter |
| 427 | Country Superlatives by Letter - E |
| 408 | Click the 3-Letter African Country Code |
| 405 | Shortest Country Names with Repeated Letters |
| 401 | Country Superlatives by Letter - G |
| 388 | Largest and Smallest Countries by Number of Letters |
| 382 | Click the 3-Letter Oceanian Country Code |
| 366 | Countries whose Capitals have Four Letters - Sudden Death |
| 356 | Coldest Country By Letter |
| 339 | Countries by Shortest Unique Initial Letter Sequences |
| 338 | Country Superlatives by Letter - J+K |
| 329 | Warmest Country By Letter |
| 319 | North American Countries with a Unique Initial Letter |
| 291 | Countries with Six Letters - World Map Sudden Death |
| 280 | Countries Bordering "N"-Countries - Sudden Death |
| 274 | Longest Country Names Excluding Repeated Letters |
| 248 | Oceanian Countries with a Unique Initial Letter |
| 243 | Countries with the same second and last letter in the name |
| 235 | Largest Countries by Letter with Exceptions |
| 235 | Country Names Containing a Letter - L |
| 231 | Country Names Containing a Letter - G |
| 231 | Country Names by Most Common Letters |
| 228 | Countries A-Z with the Smallest Area |
| 227 | Number of Countries by First Letter |
| 223 | Countries Bordering "T"-Countries - Sudden Death |
| 216 | Countries Bordering "P" Countries - Sudden Death |
| 208 | Countries Bordering "I"-Countries - Sudden Death |
| 207 | Country Names Containing a Letter - Y |
| 200 | Countries Starting With The Same Letter Furthest Away From Each Other |
| 197 | Countries that End with A |
| 195 | Country Names Containing a Letter - NN |
| 193 | Country Names Containing a Letter - OO |
| 185 | Country Names Containing a Letter - AAA |
| 184 | Name Every Country by a Single Letter With Exceptions |
| 182 | Country Names Containing a Letter - M |
| 181 | Country Names Containing a Letter - X |
| 180 | Countries that End with L |
| 179 | Countries that End with E |
| 177 | Country Names Containing a Letter - W |
| 176 | Countries A-Z with the Largest Capital |
| 174 | Country Names Containing a Letter - EE |
| 173 | Country Names Containing a Letter - F |
| 170 | Country Names Containing a Letter - K |
| 169 | Country Names Containing a Letter - P |
| 165 | Country Names Containing a Letter - II |
| 165 | Country Names Containing a Letter - H |
| 162 | Country Names Containing a Letter - UU |
| 160 | Countries by Alphabetically Near Countries |
| 159 | Country Names Containing a Letter - SS |
| 158 | Countries that Start and End with the Same Letter |
| 155 | Countries that End with I |
| 155 | Country Names Containing a Letter - TT |
| 155 | Country Names Containing a Letter - C |
| 154 | Country Names Containing a Letter - D |
| 153 | Country Names Containing a Letter - Q |
| 152 | Country Names Containing a Letter - B |
| 152 | Country Names Containing a Letter - J |
| 151 | Country Names Containing a Letter - V |
| 148 | Countries by Second Letter |
| 146 | Number of Countries by Last Letter |
| 145 | Country Names Containing a Letter - RR |
| 143 | Countries that End in -stan |
| 136 | Countries by first letter of Country and Capital |
| 132 | Countries that End with C |
| 122 | European Union countries in 1 minute by their first 2 letters |
| 120 | Name a Country for each Letter and Flag Colour |
| 119 | Countries that End with S |
| 115 | Countries that End with N |
| 110 | Countries that End with O |
| 109 | Most Common Country Names' 2 Last Letters |
| 105 | Countries that End with Y |
| 104 | Which letter has more countries beginning with it? |
| 103 | Countries and Capitals that Share No Letters |
| 102 | Countries that End with K |
| 92 | Most Common Country Names' 2 First Letters |
| 90 | Countries that End with R |
| 89 | Which country comes alphabetically in between? #1 |
| 83 | Countries that End with H |
| 83 | Countries that End with G |
| 81 | Countries that End with U |
| 80 | Which country comes alphabetically in between? #2 |
| 77 | Countries that End with Q |
| 77 | Countries that End with T |
| 76 | Countries by Letter Sequence |
| 76 | Countries that End with M |
| 72 | Countries A-Z West of New York |
| 68 | Countries with the Least Bordering Letters |
| 68 | Countries with the Most Bordering Letters |
| 64 | Countries that Start with the Letters of JetPunk |
| 47 | Spell Two Bordering Country Names Using 7 Letters or Less |
| 46 | Most Populous Countries by Letter |
| 43 | Countries Starting or Ending with the same 4 letters |
| 40 | Countries and Capitals with Rare Starting Letters |
| 35 | Name a Country for Every Letter and Length |
| 34 | Countries containing A |
| 29 | Countries by 3 Random Letters |
| 26 | Countries With Four-Letter Words |
| 21 | Name a Letter per Number of Countries |
| 21 | Countries with the Same Letter Combos #1 |
| 20 | Continents With the Most Countries per Letter |
| 19 | Countries of Europe by Last Two Letters |
| 18 | Countries with the Same Letter Combos #2 |
| 9 | 6-7 Letter Country Name Shortenings |
| 9 | Six Letter "IA" Countries |
| 8 | Five Letter "IA" Countries |
| 3 | Seven Letter "IA" Countries |
| 3 | Eight Letter "IA" Countries |
