1. Reduced the cost of expanding brain capacity by approximately 50%
2. Reduced HP of the Birthday Boy and his cake by 20%
3. Reduced movement speed of the Birthday Boy during Phase 2
4. Reduced explosion damage of the Birthday Boy by 50%
5. Fixed a bug where attached Spores may cause game crash
6. Increased the damage of the belly of the cat to 10 per tick.
Patch Note V1.04
Source: Steam Community (opens in a new tab)