Game I can't Remember...

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So I just remembered I game I used to love playing. I only had the demo, but I played it numerous times. It was kind of a top down castle game where you played as an old man with a cane and you roamed around a castle in one square movements dodging floating monsters. The game was all in sprites, had midi music and sound effects. Really hard to remember specific details. You eat an apple and it brings back some health. You eat a mushroom and you turn green and are poisoned. You drink alcohol and you randomly spin around while walking. Anybody have any clue what this game is called?

Pic is kind of what the maps look like, except a lot more pixelated.