I recently built a COSMAC Elf retro computer kit. Its 8 bit CPU is an RCA 1802 from the early 70s. I had built one back at the time after reading articles in an electronics magazine. What piqued my interest was an extension ROM chip that includes Scott Adam’s Adventureland IF game.
The game runs exceptionally well for an 8 bit computer displayed in a virtual text terminal on my Raspberry Pi. The intro splash art drawn with ASCII art i incredible. The game plays just as it would on any computer with no lag or hesitation once you are into the game. It does take a minute or so to load the intro screen art.
I have inserted a couple of pictures of the assembled Elf and a screen shot of Adventureland. The kit is less than $100 and takes a couple of days to assemble. (Believe it or not, the assembled Elf will fit in an Altoids tin.)
The kit is described at the 1802 Membership Card website.