"Bakudan Otoko" by Shinichi Nakamoto & Shigeki Fujiwara (1980) 

My god... this appears to be rendered on the "Trash-80 Co-Co"!

I write them in MS WordPad. Any text file edited in Wordpad can be pasted with a couple of simple keystrokes into the VMC10 Emulator by James Tamer (Ctrl-S in WordPad, followed by Ctrl-Q in the emulator). Back and forth, debugging and running, just like working in the old QuickBASIC environment. Very simple and pleasant way of making 8-bit BASIC programs for an old home computer system. At the end, I run it on real hardware...

Did things like this in my childhood 😋

Do you write these on a vintage MC-10 or do you use an emulator?

Nope. This channel is devoted to "Early BASIC programs running on the TRS-80 MC-10 8-Bit computer, focusing on those demonstrating simple AI techniques and text-based graphics." Here's a Wikipedia entry on the MC-10: en.wikipedia.org/wiki/TRS-80_MC-10

This is an original creation, not a port, then?

pac man has better graphics..