Has anything ever broken your game?

[TheGM]

Not really, but I run low magic worlds, so I'm very careful about what I allow in for any campaign. I once had a 2E character that was maxed out on AC, and to challenge her I had to put the party in a position where if she fell the party was in trouble. That was right before 3E came out, so I've allowed only a very little outside core rules into my games, and all has been well.

 

[RajAhten]

What do people think about psionics, only 3.5? Daze effects (no actions repeat no actions) are pretty broken like brain lock is broken to anything without SR/PR.

 

[pogre]

I use the core rules only for the most part which helps save me the trouble of weeding out some of the stuff. Harm was a bit of a pain in our 3.0 game, but not too bad.

 

[S'mon]

Spellcasting in general always threatens to break my games; 3e abandoned the mutual vulnerability of 1e/2e where wizards could easily kill fighters but fighters could easily kill wizards. Now prepped wizards can still easily kill fighters, but with no full attacks on a move and 5' steps + CON checks allowing casting in melee, fighters can pretty well never easily kill wizards, so the MAD balance is lost.

 

[scourger]

Conversions from one version of the same game to another or from one game system to another have broken the most games in my experience. House rules are also a great way to break a game.