[WillPostForFood]

You can play the Intellivision D&D game at the Internet Archive. You need a keyboard with a number pad to emulate the Intellivision controller (you could possible remap in the emulator settings). The music is pretty creepy.

https://archive.org/details/intv_Advanced_Dungeons_and_Drago...

[StanislavPetrov]

The Intellivision controller was ahead of its time. The overlays it came with for different games really added to the gameplay.