Forgotten Realms Unlimited Adventures, an old computer game from back in the day.
This software is actually a game design engine, based on the old SSI "Gold Box" games that were the first official Dungeons & Dragons games for the PC. There's a decent-sized fan community, and hundreds of adventures have been created since UA was released 20 years ago (including a couple by yours truly). The designs range from your standard homemade fantasy adventures, through adaptations of classic TSR modules, to modded games that stretch the software to present Old West, sci-fi, and superhero games.
Anyway, the other day I was bored, so I decided to fire up UA. I downloaded an adventure and created a party, and it's been sucking up my time ever since. So if posting is sparse for awhile, this is the reason why.