|Theme Cake 2-1|
|Order of Birds|
|No.of Pigs||x2 x4 x1|
|Target Score||: 75,000 points|
|Theme Cake 3-15||Theme Cake 2-1||Theme Cake 2-2|
For level 18-1, use the Yellow bird at the foot of the left tower. Then use the Orange bird just above the TNT in the middle of the level. If the bird is going past the TNT, be sure to expand it manually to ensure its detonation.
This level is almost same, except one Orange Bird instead of two.
- This is one of a few levels where already-introduced birds are featured in a bird's introduction level. In this case, 2 Yellow Birds are in Orange Bird's introduction level.
- In Birdday Party Cake 4 Update (11 Dec 2013) , This level has one more Orange Bird.