| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Captain Cutter's Treasure | Garry Francis | 2021 | English | Solution, Map |
| Chartwell Manor | British International School of Washington | 2021 | English | |
| Chico de los recados, El | Jose Daniel Carbonell |
2021 | Spanish | |
| Closet of Mystery | Michael Cox | 2021 | English | Solution, Map |
| Closure | Sarah Willson | 2021 | English | |
| Codex Sadistica: A Heavy-Metal Minigame | grave snail games | 2021 | English | |
| Constellation | British International School of Washington | 2021 | English | |
| Cookie Dunk, Text Adventure | Meseta | 2021 | English | |
| Crew, The | Olaf Nowacki | 2021 | English |