That would be a good one. I used to play it on the Sega Master System, the a early model released in the U.S. that could output to an RGB monitor.
PSO, and PSO 2 on PC owe their origins to a Sega Master System game.
+1

Whish they actually bothered to port the Sega Ages version on the Switch to PC...

But Generations 1&2 translated and ported to current consoles +PC wouldn't be a problem either.

引用自 Ultimate Antman：

PSO, and PSO 2 on PC owe their origins to a Sega Master System game.

The first Phantasy Star Online isn't on Steam...