Siege Battle Power Calculator

How to Use This Tool

Follow these steps to generate accurate siege battle power ratings:

1. Select your game type (Strategy Video Game or Tabletop Wargame) to adjust for platform-specific balance rules.
2. Enter attacker stats: unit count, unit type, tier, morale modifier, and terrain conditions.
3. Enter defender stats: unit count, unit type, tier, fortification level, and morale modifier.
4. Adjust the RNG variance slider to set how much random chance affects outcomes (0-30%).
5. Click the Calculate button to view a detailed breakdown of power ratings and win probabilities.
6. Use the Reset button to clear all inputs and start a new calculation.
7. Click Copy Results to save the full breakdown to your clipboard for reference.

Formula and Logic

The calculator uses a tiered multiplier system to estimate battle power, with adjustments for game type, terrain, and morale:

• Base Power = (Unit Count) × (Tier Multiplier) × (Unit Type Multiplier)
• Attacker Adjusted Power = Base Power × (1 + Morale%/100) × Terrain Multiplier × Game Type Modifier
• Defender Adjusted Power = Base Power × (1 + Morale%/100) × Fortification Multiplier × Game Type Modifier

Win probability is calculated using a linear scaling model capped at 10-90% to account for unavoidable RNG in siege engagements. Estimated battle duration scales with total combined power of both sides, capped at 30 turns.

Practical Notes

Keep these gaming-specific factors in mind when using the tool:

• Multiplier values are generic and may not reflect patch-specific balance changes in live-service video games. Always check latest patch notes for adjusted unit stats.
• Tabletop wargame calculations assume standard rulebook stats; custom homebrew rules will require manual multiplier adjustments.
• RNG variance accounts for critical hits, missed rolls, and random in-game events. Higher variance settings are more appropriate for games with heavy RNG mechanics.
• Fortification multipliers reflect standard defensive structures; special in-game fortifications (e.g., magic barriers) are not included by default.
• Morale modifiers should reflect recent battle outcomes, supply levels, and leader bonuses for accurate results.

Why This Tool Is Useful

This calculator solves common pain points for gaming enthusiasts:

• Competitive players can balance their siege army compositions before entering matches to avoid underpowered engagements.
• Game designers can use the tool to test unit balance and fortification effectiveness during development.
• Streamers and content creators can generate quick power breakdowns for live battle analysis without manual math.
• Tabletop players can resolve siege disputes quickly using standardized power ratings instead of lengthy rulebook lookups.

Frequently Asked Questions

How accurate are the win probability estimates?

Win probabilities are estimates based on power differential and include a 10-90% cap to reflect real-world RNG in games. They do not account for player skill, hidden unit abilities, or last-minute tactical changes.

Can I use this for games with custom unit stats?

Yes, you can adjust unit tiers and types to match custom stats. For example, a custom "hero" unit can be mapped to the Legendary tier, and unique unit types can use the closest matching default type multiplier.

Why is there a maximum win probability of 90%?

All siege battles have inherent randomness: missed attacks, reinforcement delays, and weather effects can swing outcomes even when one side has a large power advantage. The 90% cap reflects this real-world gaming variability.

Additional Guidance

For best results, pair this tool with in-game stat screens or official tabletop rulebooks:

• Update unit tier selections after major game patches to reflect balance changes.
• Use the RNG variance slider to match the specific game's randomness level: 5-10% for low-RNG strategy games, 20-30% for high-RNG titles.
• Save multiple calculations to compare different unit compositions and fortification setups.
• For tabletop games, add a 5-10% manual adjustment for unique scenario rules not included in the default calculator.