###Pendragon

Focus is on feudal manors. Works quite well on a local or even small baronies; the greater barons (Viscounts, Counts, Dukes) and Kings don't work so well. 3 different large scale landhold rulesets: Noble's Book (1e), Lordly Domains (3e/4e), Book of the Manor (5E, and only smaller landholds - Manors and Estates). Abstraction level varies. Primarily designed to part PC's and their loot.

###Reign

Extensive landholding rules. Slightly abstracted. Don't have it, so can't comment in detail, but well respected by ORE fans, and designed to be focused upon it.

###D&D Companion Set Dominion Rules

Comparable level of detail to Pendragon, but slightly crunchier. Easily adapted to AD&D. Makes use of the traditional 2-mile hex maps, and is somewhat abstract.

Essentially, this is an event system with economics, and ties nicely to followers and such. Mostly about the cashflow, and requires extensive GM interaction.

For those who lack the older rules, Dark Dungeons includes a clone of this.

###D&D 3E Strongholds Book

Not really that good for running things. Less economic detail even than Birthright... but more on building strongholds (in weird detail...) Not a good choice, IMO.

###Houses of the Blooded

Like reign, focuses on using the system as a metagame. Unlike Reign, not so much crunch. Very narrativist. Very playable, and drives the campaign, but tries to NOT be the focal point of the campaign.

highly abstracted. Seasonal economic turns.

###Blood and Honor

Japanese setting, rules essentially "Houses of the Blooded Lite"... Simple, and stylized. Works pretty well, very abstracted. Again, seasonal econ turns.

Pendragon

Focus is on feudal manors. Works quite well on a local or even small baronies; the greater barons (Viscounts, Counts, Dukes) and Kings don't work so well. 3 different large scale landhold rulesets: Noble's Book (1e), Lordly Domains (3e/4e), Book of the Manor (5E, and only smaller landholds - Manors and Estates). Abstraction level varies. Primarily designed to part PC's and their loot.

Reign

Extensive landholding rules. Slightly abstracted. Don't have it, so can't comment in detail, but well respected by ORE fans, and designed to be focused upon it.

D&D Companion Set Dominion Rules

Comparable level of detail to Pendragon, but slightly crunchier. Easily adapted to AD&D. Makes use of the traditional 2-mile hex maps, and is somewhat abstract.

Essentially, this is an event system with economics, and ties nicely to followers and such. Mostly about the cashflow, and requires extensive GM interaction.

For those who lack the older rules, Dark Dungeons includes a clone of this.

D&D 3E Strongholds Book

Not really that good for running things. Less economic detail even than Birthright... but more on building strongholds (in weird detail...) Not a good choice, IMO.

Houses of the Blooded

Like reign, focuses on using the system as a metagame. Unlike Reign, not so much crunch. Very narrativist. Very playable, and drives the campaign, but tries to NOT be the focal point of the campaign.

highly abstracted. Seasonal economic turns.

Blood and Honor

Japanese setting, rules essentially "Houses of the Blooded Lite"... Simple, and stylized. Works pretty well, very abstracted. Again, seasonal econ turns.