Updated for patch 7.0.0.

zstd compression enabled.

No update needed for patch 6.1.0.

• New: Elspeth's schematics or Gelt's arcane essays can be used to fire the cannon.
  
• Fixed: Thunderball wasn't showing up in the garrison.
  
• Fixed: building short description was missing.

Updated for patch 5.1.

Changed: prestige cost increase for firing the cannon only happens if the target is actually hit.

No update needed for patch 4.2.0.

The dilemma to fire the cannon SHOULD now include in the title both your % chance to hit and your % chance to explode.

Now compatible with The Old World campaign.

• New: successive misses will grant an accuracy bonus. (1% per miss)
  
• New: Two lameass technologies that no one ever researches voluntarily (Combustion Agent and Improved Piston Technology) will now grant bonuses to Ulric's Thunder.
  
• Changed: bonuses/nerfs to accuracy are now factored in after the distance calculation.
  
• Changed: to compensate for the accuracy improvements, the prestige cost of firing the cannon will go up each time it fires.