Although none of the Major Roguelikes was written in Pascal, quite a few of the recently developed roguelikes are made in a Open Source implementation of that language called FreePascal.
Roguelikes in FreePascal
This is a list of the more known roguelike projects developed in FreePascal.
FreePascal Roguelike Developers
Not surprisingly all the games listed above are the creation of two roguelike developers who chose FreePascal as their language of choice.