When you apply the percentage mods to an advantage or disadvantage in GURPS 4e, do you round up or down?

So I was playing yesterday and our party had been wandering through tunnels and the DM said there was some noise in the distance. So one of the players illuminated an object and threw it down the winding corridor about 80 feet from where my elvish player was at (I had just stepped through a door ...

How does reincarnation affect feats and ability score increases? I'm running a campaign with a group of fairly high (16th-18th) level characters and the only "bring back the dead" option they currently have (or are likely to have for a while) is Reincarnate. The Reincarnate Spell states: The mag...

Alice (a wizard) & Bob (class unspecified), are planning an elaborate prank on Carol (a cleric). Alice casts Feign Death on Bob, and then wails about how he has been slain by a horrible monster/curse/whatever. Carol, who is, for some reason, friends with these jerks, comes running. Carol does not...

I'm the DM, and I'm concerned that combat feels pretty static. As I understand it in RAW: Once you've reached melee range, moving further away will provoke an opportunity attack, unless you disengage disengage costs an action (unless you have a feature that lets you do it for free) This seems t...

I was considering porting a character from an earlier edition of the game, who had been reincarnated before becoming an adult. This is purely backstory, however it got me thinking about how this would work in game. I don't know if the spell changed between editions, or if I had missed it entirely...

If I cast create bonfire in a 5 foot unoccupied space, and then, in the next round, cast mold earth to excavate that same area creating a 5 foot pit underneath the fire -- does the bonfire fall or stay at ground level? This came up in game. The bonfire is magically created and does not need to b...