diff --git a/README.md b/README.md
index ccd114b..a38072e 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ Here you will find a collection of technical information for the various control
- [Nintendo Wii controllers](wii/README.md)
- [Standalone controllers](standalone/README.md)
- [Software compatibility (WIP)](compatibility/README.md)
+- [Adapters and hacks](adapters/README.md)
## GitHub repository
diff --git a/compatibility/README.md b/compatibility/README.md
index 534ef6b..6ee679e 100644
--- a/compatibility/README.md
+++ b/compatibility/README.md
@@ -25,7 +25,7 @@ The following table lists the compatibility between each controller (first row)
| Densha de GO! Ryojōhen
(Microsoft Windows) | Yes (1) | Unknown | Unknown | Yes | Yes (3) | Yes (3) | No | No | Yes |
| Densha de GO! Ryojōhen
(Sony PlayStation 2) | No | No | No | No | Yes | Yes | Yes | No | No |
| Densha de GO! Professional 2
(Microsoft Windows) | Yes (1) | Unknown | Yes | Yes | Yes (3) | Yes (3) | No | No | Yes |
-| Densha de GO! Professional 2
(Sony PlayStation 2) | Yes[*](../adapters#playstation-2-cheat-codes-for-playstation-1-controllers) | No | No | No | Yes | Yes | Yes | No | No |
+| Densha de GO! Professional 2
(Sony PlayStation 2) | [Unofficial](../adapters#playstation-2-cheat-codes-for-playstation-1-controllers) | No | No | No | Yes | Yes | Yes | No | No |
| Densha de GO! Final
(Microsoft Windows) | Yes (1) | Unknown | Yes | Yes | Yes (3) | Yes (3) | No | No | Yes |
| Densha de GO! Final
(Sony PlayStation 2) | No | No | No | No | Yes | Yes | Yes | No | No |
| Densha de GO! Hashirō Yamanote‑sen
(Sony PlayStation 4) | Yes (5) | No | Yes (6) | Untested (6) | No | No | No | No | Yes |