Seems like I've chosen a game that's just a bit too obscure.
Here's another screen and the last batch of hints. Now you should be able to google it out, even if you never played it.
- it's a game for the first major home console that came with a built-in modem
- the action I mentioned is "urinate" (look at the second screenshot)
- the acronym of the game's title (sometimes also written as a part of the title) is the same as one of the most popular net lingo acronyms, but the phrase it stands for is different