Mass combat system (player-facing)

Design goals: quick to use. Tiered. Use to resolve parts of battle when PC's aren't there. Use to resolve whole battles. Determine conditions of section of battle PC's are in

Basic Mechanic

Determine the basic denominator for units. 1, 10, 20, 100, whatever works best, as long as they match.

You can, on the fly, divvy up a unit of say, 100, into 10 units of 10, and resolve a section of the battle on a smaller scale.

Units roll vs each other. The higher rolling unit eliminates the looser. On a tie, both sides are wounded, and reduce their dice size by one.

The unit's initial magnitude die is determined based on the CR of the creatures comprising it, as shown on the following table:

CR	Dice
0	--
1/8	1
1/4	1d2
1/2	1d3
1	1d4
2	1d5
3	1d6
4	1d8
5	1d10
6	1d12
7	1d16
8	1d20
9	1d24
10	1d30
11	1d40*
12	1d50*
13	1d60*
14	1d80*
15	1d100*
16	1d120*
17	1d160*
18	1d200*
19	1d240*
20	1d300*

 * for these values, roll an appropriate smaller dice and multiply by ten. For example, 1d4 for 1d40.  This means that opposing results between the ten-columns have no additional effect if you roll a 20 it's the same as a 25- you need a 30 or higher to move up a tier vs. this dice.

A unit can be attacked by any number of units that can reach them, rolling each attack separately.

That's all for now! Still kinda a rough idea, but hey I did one playtest with it and it worked alright. I gotta just post it, cuz my instinct is to just sit on it until it's perfect  and that WON'T DO