Fans of old games wanted! REWARD!

Hey!

I am looking for an old game I've played back when Win 95 first came out. It was called Castle (I think). Either way, the executable was named "CASTLE.EXE". And you were some warrior walking through dungeons, killing fiends.

I know this is a very vague description of the game; however: Whoever finds the game gets a $20 Steam Wallet Card once I get my next paycheck in 2 weeks.

Thanks in advance!