Here are a bunch of rules that apply specifically to the AD&D games we play here, not always used though :P Enjoy. - Merlin & Dragon Ninja

EXP, Training and "Leveling Up":

Normal Rule Modifications:

Initiative:
1d8 plus speed modifiers for the weapon

Battle Descriptions:
from now on, this is what players should be including in their battle posts, preferably in order...

I would also suggest that the players look up what weapons are effective against what enemies. i.e. thrown daggers & arrows are useless against skeletons, but blunt weapons are best (maces, shields, staves, etc).

Custom and Fun Rules: (We will be adding more, so check back frequently)

1) Enjoying the Fun:
RP bonuses may be given out for RPing their Race, Class, and overall character well. This doesn't mean you can get a bonus for RPing a couple of actions, it applies to your overall RPing inbetween the times the DM gives out the exp points. EXP bonuses can also be given out for plyers having a clever idea (DM's discresion), an idea that saves the party, players encouraging others to participate, or

This rule is a double edge sword. You can also lose exp for being the direct cause of a character's death (assassinations excepted), RPing totally out of character (unless in disguise, etc), badmouthing other characters (and players) in the game or out of the game, or just plain being stupid. The game is for all to enjoy. Those caught just plain being stupid, goofing around, or otherwise ruing the fun for any other players will get 1 warning and an exp penalty and on the second offence will be asked to leave the game for the night. If the player does it again, his/her character WILL BE REMOVED FROM THE GAME.

2) Ooops, I rolled a 1:
I am currently working on posting my Critical Miss table. Until then, the DMs have the option (through dice rolls) to:

3) If Death Does You Part:
If you get brought to 0 HP you're unconscious. And you "die" at negative half of your Constitution. Example, if you have 10 Constitution you die at -5 HP.

And if you lose more than half your hp in one attack there is a system shock check, if you fail it it's grim reaper time. This is only used for characters above level 3.

Edit: Some of the DMs are adopting the -10HP rule. which means that you get to that point and now further.
Edit: If you lose all of your HP in one shot, then the DM must decide if the character has suffered too much trauma to be kept alive. This applies to -ALL- Levels. If the DM decides that the character still lives, then a Sys Shock check -MUST- also be made if the character goes below the minimum HP limit (Negative Half Con or -10)

4) There Can Be Only One:
If you're the last survivor in your party you go into "Saber Frenzy" mode where you get double your moves.

5) Double Your Pleasure, Double Your Fun:
If you roll a 20 on your attack roll (monsters too), you do twice your damage roll.
I also have another option available for DMs to concider. It is the Critical hits table.

6) Will The Real Player Characters Please Stand Up:
There is a potential for experience rewards for players that show up more, stay longer for the game sessions, and their roleplay is frequent and of high quality. Don't think of it as punishing the nonparticipants, but as a reward for those of us with less of a life :P Also, there may be an exp award for those that attend all the gaming sessions in between the times that the DM tallies all the exp and gives it to the character. On the downside if the players miss too many games (without valid excuse) their characters will start losing experience or be dropped from the game entirely.

7) To The Victor Go The Spoils:
This is how post-battle experience is divvied out. If a monster is worth 100 exp, and the battle lasts for 4 rounds, if you participate in all 4 you get the 100 exp, but if you only stay for 2 you only get 50 exp points.

8) Final Fantasy I Style (..."Ineffective")
When a battle starts, if two characters attack one baddie, and the first character kills it, the second one still attacks it. I don't know if this is already a rule but it is now at least :P
Taking turns during game play or during battles also doesn't work. it slows down the game and makes it less enjoyable for all.

9) Dare To Be Stupid:
Players that do something totally unexpected, and causes the DM to burst out laughing IRL will be given an exp reward. Now daring to be stupid is completely different from just being stupid, ie doing dumb things on purpose won't get you anywhere :P

10) From Hell's Heart I Stab At Thee:
If you are brought exactly to 0 health by an attack you have a 1d4 chance to do an extra attack before everything fades to black.

11) Your Arm's Too Short To Box With God:
If I think you're trying to take advantage of the "Dare To Be Stupid" rule or otherwise trying to muck up the DM on purpose, he or she reserves the right to thrust you into a tough scrape :P
**This also applies to players that question the DM on decisions, actions or other things the player may have read in books. The DM has the last decisions on -ALL THINGS- dealing with his or her campaign. Those players who quote from their rule books, etc will be punished (after 1 warning of course). Rule Book thumping -WILL NOT- be tolerated. TSR designed the books as a guide and -Not as a Hard Set Rule Book-