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Mech and starfighter rules

In this setting starships and mechs are an important means of transportation and defense. In particular there is usually a strong rivalry between the fighter pilots and mech pilots (reffered to as hot foots and cold foots respectively). 

Size and stats chart

These are the basic rules for ships and mechs[humanoid shaped vehicles] in the setting. These are the parameters for their basic stats which can be constructed the same way basic CR works (except for + CR which are roughly ten times stronger than a normal CR).

 

(Note: this system is based on elements of the gundam and mass effect 5e convertions with some elements being changed for the system's chohesion)

 

(Note: When a creature takes damage, if the amount of damage is below their damage threshold, they instead take no damage. This is decided after resistances, immunity, and other decreases to damage are calculated. A critical hit ignores the target's damage threshold.) 

Mechs and Fighters:

Mech/Fighter tiers

  1. Class: ​legion carrier mech/corvette

    • CR 25-30

    • Size on dogfighting scale: gargantuan (for a size greater than colossal on normal scale)

    • Damage threshold: 30<

    • HP: 1,000 

    • mech base speed/base mph: 90 ft./ 9 mph

    • height or length: 128+ ft.

    • weight: 2,000,000 lb or more

    • dogfight space: 20x20

    • fighter max speed/ max mph (100/1): 56,000 ft./ 560 mph

  2. Class: pantheon mech/ heavy fighter, shuttle

    • CR 20-25

    • Size on dogfighting scale: Huge (colossal normal size)

    • Damage threshold: 25 to 30

    • HP: 800

    • mech base speed/base mph: 60 ft./ 6 mph

    • height or length: 64- 128 ft.

    • weight: 250,000- 2,000,000 lb

    • dogfight space: 15x15

    • fighter max speed/ max mph (100/1): 42,000 ft./ 420 mph

  3. Class: titan mech /fighter

    • CR 15-20

    • Size on dogfighting scale: Large (Gargantuan normal size)

    • Damage threshold: 20

    • HP: 600

    • mech base speed/base mph: 50 ft./ 5 mph

    • height or length: 32-64 ft.

    • weight: 32,000- 250,000 lb

    • dogfight space: 10x10

    • fighter max speed/ max mph (100/1): 35,000 ft./ 350 mph

  4. Class: champion mech/light fighter

    • CR 10-15

    • Size on dogfighting scale: Medium (Huge normal size)

    • Damage threshold: 15

    • HP: 400

    • mech base speed/base mph: 40 ft./ 4 mph

    • height or length: 12-32 ft.

    • weight: 4,000- 32,000 lb

    • dogfight space: 5x5

    • fighter max speed/ max mph (100/1): 28,000 ft./ 280 mph

  5. Class: soldier mech/ speeder

    • CR 5-10

    • Size on dogfighting scale: Small (large normal size)

    • Damage threshold: 10

    • HP: 200

    • mech base speed/base mph: 30 ft./ 3 mph

    • height or length: 8-16 ft.

    • weight: 500- 4,000 lb.

    • dogfight space: 2.5x2.5

    • fighter max speed/ max mph (100/1): 1,200 ft./ 120 mph

  6. Class: average sized

    • CR 0-5

    • Size on dogfighting scale: Tiny (medium normal size)

    • Damage threshold: 5

    • HP: 100

    • mech base speed/base mph: 30 ft.

    • height or length: >8 ft.

    • weight: > 500 lb.

    • dogfight space: 2.5x2.5

    • fighter max speed/ max mph (100/1): normal​

​

​

Capital ship scale:

Tier 

  1. Class:​​ station/ dreadnought

    • Damage threshold: 90

    • Hull/Shield points: 1 battle cruiser stat, 4+ carrier stat or lower

    • Base speed: 1-2 units

    • Length: 5,400+ yards

    • Space: multiple spaces (minimum of 20x20)

    • AC: Each section has independent AC

    • Challenge Rating: counts as multiple foes for sake of challenge rating with each individual section having its own challenge rating ​and actions taken on the same turn

  2. Class: battlecruiser 

    • Damage threshold: 75

    • Hull/Shield points: 8,000 to 15,000 

    • Base speed: 1-3 units

    • Length: 2,200-5,400 yards 

    • Space: 20x20

    • AC: 25-30

    • Challenge Rating: 26+ to 30+

  3. Class: Carrier

    • Damage threshold: 60

    • Hull/Shield points: 4,200 to 4,800

    • Base speed: 1-2 units

    • Length: 1,100-2,200 yards

    • Space: 15x15

    • AC: 13-14

    • Challenge Rating: 20+ to 25+

  4. Class: Destroyer

    • Damage threshold: 50

    • Hull/Shield points: 2,000 to 3,500

    • Base speed: 2-3 units

    • Length: 550-1,100 yards

    • Space: 10x10

    • AC: 20 to 22

    • Challenge Rating: 15+ to 19+ 

  5. Class: Frigate

    • Damage threshold: 40

    • Hull/Shield points: 1,500 to 3,000

    • Base speed: 5-10 units

    • Length: 220-550 yards

    • Space: 5x5

    • AC: 13-24

    • Challenge Rating: 6+ to 14+

​

​

Sample Stat Block

(mech)

Grunt suit

Hull points- 200 

Shield points- N/A

AC- (10 + pilot dex)

Size- large 

Stats

  • Str- 12

  • Dex- 16

  • Con-  12

Speed

  • Normal- 30 feet, 

  • Travel- 3 mph

Crew

  • Min-1

  • Max-1

Weapons

  • Machine gun [pilot aim to hit +XX, 39 (3d8 X 3) piercing damage, dogfighting range: 100/300 feet (/3 for dogfighting), ammo: 20]

    • Burst fire: 10 foot by 10 foot, dex save [DC= 11 + user proficiency], 100 feet range, 

  • Reinforced manipulator [pilot aim to hit +XX, 19 (3d12) slashing damage, 5 foot reach, ] 

CR- 

​

(fighter)

The Xion fighter

Hit points- 200 

Shield points- 250 

AC- 22

Size- gargantuan

DT- 20

Speed

  • Normal- 33,000 feet, 3,300 feet per round acceleration

    • 40% of speed turn

  • Travel- 280 mph, 28 mph acceleration

  • Ship unit- 12 

  • Hyperspace- 6 ftlu

Crew

  • 1 min

  • 2 max (AI or robot)

Systems

Weapons

  • Plasma cannon- pilot aim to hit +XX, 1d8 x 10 radiant, range: 80/240 feet (30/80 yards dogfighting), 

  • Torpedo- pilot aim to hit +XX, 1d8 x 10 thunder + 1d6 x 10 force (8 torpedoes), 140/420 feet (45/140 yards dogfighting)

CR- ? 

​

​

(ship)

Stealth ship

Hull points- 1700

Shield points- 500

AC- 18

Size- frigate class

DT- 40

Speed 

  • Normal- 30,000 feet, 3,000 feet per round acceleration

    • Turning- 40% of speed turn

  • Travel- 300 mph, 30 mph acceleration

  • Ship unit- 10

  • Hyperspace- 6 ftlu

Crew

  • Min- 6

  • Max- 20

Systems

  • Helm: 1 crew

  • Navigation: 1 crew 

  • EWS: 1 crew

  • Weapons: 1 crew

  • Drive: 2 crew

Weapons

  • Capital torpedo- 350 (1d6 x 100) thunder plus 250 (1d4 x 100) force damage, (20 ammunition), bypasses shields, 

Cargo capacity- 10 tonnes

CR- 11+

Rules 

dog fighting and star ship scales

If you desire more specific rules for close fighter combat you can use the dogfighting scale. When dogfighting the scale goes from feet to yards and so everything is divided by three. You additionally use a separate column to determine the height of each combatant. For dogfighting fighters (but usually not mechs), you can give a certain percentage for the turning speed (the amount of distance out of your total speed that you must use before you can alter your direction).

ship turns in combat (link)

There wasn't much to add with the ship to ship combat rules from the mass effect conversion so I will direct you to those rules (specifically the ship combat section).

Mech and fighter weaonry

When determining the damage scores of the stats fighters are typically multiplied by ten while mechs are multiplied by their own modifier but usually have a greater variety of weapons and dice.

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