There was (is?) a whole suite of games for the /36 system, which would presumably also run on the AS/400. This suite included Black Jack, dice games, and a very nice adventure game, which I enjoyed playing in the 80s as a kid on my dad's /36 (for which he ran a business). The screen showed a map with treasures, enemies, coins, and other stuff. You could move around, fight monsters and do trading. An interesting feature was that the weight of stuff you carried around mattered. And since one coin had a weight of 1 (whatever weight unit), it often made sense to overpay for an item so you could reduce the overall weight you were carrying around. Unfortunately, I don't remember the name of the game and I also don't have the gaming libraries anymore. I have an AS/400 (even two of them, hehe) and I would love to run the adventure one more time :-)