I'd like to take a stab at more forum games, but I need to figure out some stuff first. Any and all feedback is appreciated. The more specific the feedback is, of course, the better.

First off, what sort of games do you/don't you like to play and why?

After that, take a look at the games I've done in the past:
Dead Thread
Thread of the Living Dead!
Fight of the Century (of the week)!
Time to Kill
Mudslingers
Snowball Skirmish
Speedrun
Gnommernymn
Myth Madness (pseudo-game)
Math Madness
Battlespud!
Committee Conspiracy
Katzenjammer
Helm's Deep
Tug of War
Cold War Capitalism
Don't Sink!
Story Arcade: Without Credit

While I'm interested in feedback for any of them, I'm mostly interested in feedback on Katzenjammer and Cold War Capitalism. What did you like and not like about these games, if anything? What sort of games do you think you'd be interested in playing on these forums? Feel free to add whatever else you feel is important.

Thanks all!

EDIT: I figured I should have Story Arcade on their too, even though it's not a game I've been able to run on the forums yet. I'd definitely appreciate feedback on that one, though.

Katzenjammer was the best as it was interactive but could still be fun.

Katzenjammer would have been fun if the people participating actually knew how a text adventure worked. It might work with a single person as 'the game', and everyone else throwing commands at him.

The games where you move something, like Helmsdeep, and the shark thing, get boring quickly.

Cold War Capitalism was fun until you started to formalize the rules.

Here's a good forum game : We start with the following rules. 1) Someone proposes a change to the existing rules. 2) The change is voted on, and applied if the majority agrees. Those are the only rules. The game is a game about the rules, and quickly becomes an awesome thinking-man's game, especially when rules that modify how you're allowed to propose rules get added, and you have to start digging out loopholes.

I didn't really participate because it was too much work to figure out the rules and play along

Keeping it really short and simple, and maybe expanding upon the game as it goes would be more enticing.