Here are the AI created Blueprints for a Halloween game in UE5.7.
Game concept — Little Vampire
Style: Halloween cartoon platformer
Engine: Unreal Engine 5.7
Camera: Side-on 2.5D
Player: Small vampire sprite
Forms:
Vampire — walks, jumps and explores- Bat — flies freely and can bite victims
Basic level loop
Start Level → Explore → Transform into Bat → Fly → Bite Victims → Reach Bite Target → Level Complete
For example:
Level 1: Bite 5 victims
Level 2: Bite 8 victims
Level 3: Bite 12 victims
Level 4: Bite 15 victims + avoid vampire hunters
Level 5: Bite 20 victims + Halloween boss
1. Create the project
Create:
Games → Blank → Blueprint
Recommended settings:
- Blueprint
- Desktop
- Maximum Quality
- Side Scroller-style camera
- Starter Content optional
Create these folders:
Content
├── Blueprints
│ ├── Player
│ ├── Enemies
│ ├── Pickups
│ ├── Levels
│ └── UI
├── Characters
├── Animations
├── Sprites
├── Sounds
└── Materials
2. Player character
Create:
BP_VampireCharacter
Parent:
Character
Components:
BP_VampireCharacter
│
├── CapsuleComponent
├── Sprite_Vampire
├── Sprite_Bat
├── SpringArm
│ └── Camera
└── BiteCollision
For a 2D sprite game, you can use Paper 2D sprites.
If you’re using 3D characters with 2D-looking sprites, the same Blueprint logic works.
3. Player variables
Inside BP_VampireCharacter, create:
Boolean
IsBat
Default:
False
Integer
BiteCount
Default:
0
Integer
RequiredBites
Default:
5
Boolean
CanBite
Default:
True
Float
WalkSpeed
Example:
400
Float
BatSpeed
Example:
700
4. Vampire movement
For the vampire form, use normal platform movement.
Input
Create:
IA_Move
with:
A / Left Arrow
D / Right Arrow
Blueprint:
IA_Move
│
▼
Get Axis Value
│
▼
Add Movement Input
│
└── World Direction = X
The vampire can therefore run left and right.
5. Jump
Create:
IA_Jump
Blueprint:
IA_Jump
│
▼
Branch
Condition = NOT IsBat
│
▼
Jump
So the vampire can jump normally.
6. Transform into a bat
Create:
IA_Transform
For example:
Space Bar
or perhaps:
B
Blueprint:
IA_Transform
│
▼
Branch
Condition = IsBat
│
├── False
│ │
│ ▼
│ Become Bat
│
└── True
│
▼
Become Vampire
7. Become Bat Blueprint
Create a custom event:
BecomeBat
Blueprint:
BecomeBat
│
▼
Set IsBat = TRUE
│
▼
Set Character Movement Mode
│
▼
Flying
│
▼
Set Max Walk Speed
│
▼
Set Sprite_Vampire Visibility = FALSE
│
▼
Set Sprite_Bat Visibility = TRUE
Your bat now replaces the vampire.
8. Become Vampire
Create:
BecomeVampire
Blueprint:
BecomeVampire
│
▼
Set IsBat = FALSE
│
▼
Set Movement Mode = Walking
│
▼
Set Max Walk Speed = WalkSpeed
│
▼
Sprite Vampire = Visible
│
▼
Sprite Bat = Hidden
9. Bat flight
When IsBat == TRUE, the player should be able to fly in all directions.
A simple Blueprint approach:
IA_Move
│
▼
Branch
│
├── IsBat FALSE
│ │
│ ▼
│ Add Movement Input
│
└── IsBat TRUE
│
▼
Add Movement Input
│
├── X direction
│
└── Z direction
You can therefore fly:
← → ↑ ↓
rather than being restricted to the ground.
10. Bat flight speed
When transforming:
Get Character Movement
│
▼
Set Max Fly Speed
│
▼
700
For a faster bat:
900
You could even make power-ups increase this.
11. Bite attack
Create an input:
IA_Bite
Keyboard:
E
When pressed:
IA_Bite
│
▼
Branch
Condition = IsBat
│
▼
Branch
Condition = CanBite
│
▼
Play Bite Animation
│
▼
BiteCollision → Get Overlapping Actors
12. Bite collision
Create:
BiteCollision
Use a:
Sphere Collision
or:
Box Collision
Place it slightly in front of the bat’s mouth.
Example:
BAT
🦇
O
/|\
\
[BITE]
|
|
VICTIM
Set collision:
Collision Enabled = Query Only
13. Victim Blueprint
Create:
BP_Victim
Parent:
Character
Components:
Capsule
Sprite
Variables:
HasBeenBitten
Boolean:
False
14. Bite the victim
Inside the vampire:
BiteCollision
│
▼
Get Overlapping Actors
│
▼
For Each Loop
│
▼
Cast To BP_Victim
│
▼
Call Get Bitten
Inside BP_Victim, create:
GetBitten
Blueprint:
GetBitten
│
▼
Branch
HasBeenBitten?
│
├── TRUE
│ └── Do Nothing
│
└── FALSE
│
▼
Set HasBeenBitten = TRUE
│
▼
Play Bite Reaction
│
▼
Notify Vampire
This prevents the same victim from counting repeatedly.
15. Increase BiteCount
After successfully biting someone:
Victim GetBitten
│
▼
Get Player Character
│
▼
Cast BP_VampireCharacter
│
▼
BiteCount + 1
│
▼
Set BiteCount
│
▼
Update HUD
│
▼
Check Level Complete
16. Level completion
Create a custom event:
CheckLevelComplete
Blueprint:
CheckLevelComplete
│
▼
BiteCount >= RequiredBites?
│
Branch
/ \
FALSE TRUE
│
▼
Level Complete
The important comparison is:
BiteCount >= RequiredBites
So if the player needs 5 victims:
0 / 5
1 / 5
2 / 5
3 / 5
4 / 5
5 / 5
At 5:
LEVEL COMPLETE!
17. Level Complete Blueprint
Create:
BP_LevelManager
or put the logic in the Level Blueprint initially.
Create:
CompleteLevel
Blueprint:
CompleteLevel
│
▼
Disable Player Input
│
▼
Play Victory Animation
│
▼
Play Halloween Victory Music
│
▼
Delay 3 Seconds
│
▼
Open Level
For multiple levels:
Level_01
↓
Level_02
↓
Level_03
↓
Level_04
↓
Level_05
18. Halloween HUD
Create:
WBP_HUD
Put a small Halloween-style counter in the corner:
🩸 VICTIMS
3 / 5
You can also display:
🦇 BAT FORM
when flying.
Example:
┌──────────────────────────┐
│ 🩸 VICTIMS 3 / 5 │
│ │
│ 🎃 │
│ │
│ 🦇 │
│ │
└──────────────────────────┘
19. Updating the counter
In WBP_HUD, create a Text variable:
VictimCounter
Bind it to:
Get Player Character
│
▼
Cast BP_VampireCharacter
│
▼
BiteCount
│
▼
RequiredBites
Return:
BiteCount + " / " + RequiredBites
For example:
3 / 5
20. Vampire/Bat transformation effect
Make the transformation feel satisfying.
When:
BecomeBat
play:
Smoke Effect
+
Dark Magic Particles
+
Bat Sound
Then:
Vampire Sprite Hidden
Bat Sprite Visible
You could briefly display:
✦
🦇
WHOOSH!
21. Victim reactions
Different victims can have different reactions.
Create an enum:
VictimType
Values:
Villager
Guard
Witch
PumpkinMan
Ghost
Skeleton
When bitten:
Villager
SCREAM!
Guard
"Hey!"
Witch
laugh / curse
Ghost
ghostly scream
This gives the levels variety.
22. Don’t let the player bite the same victim twice
This is important.
Inside BP_Victim:
HasBeenBitten
Initially:
FALSE
On first bite:
FALSE
↓
TRUE
On subsequent bites:
TRUE
↓
Ignore
So:
Victim #1 → +1
Victim #1 → nothing
Victim #1 → nothing
rather than allowing the player to farm one victim.
23. Optional vampire hunter enemies
You could add:
BP_VampireHunter
The hunter carries:
Crossbow
and fires projectiles at the bat.
The bat must dodge:
🦇 ← arrow ← 🏹
If hit:
Health - 1
This gives the flying sections more challenge.
24. Level design
A typical level could look like:
🌙
🎃 🦇
\
\
🏚️ 👨
\ |
\ 👩 |
\ |
🪦 👨 |
\ |
───────────────┴───────────
🧛
The vampire starts on the ground.
He explores the level, finds victims, then:
SPACE
↓
🧛 → 🦇
flies around the level and bites them.
25. Example Level 1
The Haunted Village
Required:
5 victims
Victims:
Villager
Villager
Witch
Villager
Ghost
Villager
The player needs any 5.
HUD:
🩸 0 / 5
After first bite:
🩸 1 / 5
After fifth:
🩸 5 / 5
Then:
LEVEL COMPLETE!
26. Level 2
The Graveyard
Required:
8 victims
New hazards:
- Falling gravestones
- Skeletons
- Ghosts
- Vampire hunters
- Spikes
The bat can fly above many hazards, but hunters can still attack.
27. Level 3
The Haunted Castle
Required:
12 victims
Add:
- Moving platforms
- Locked doors
- Secret rooms
- Gargoyles
- Witches
- Skeleton guards
The vampire must switch between:
VAMPIRE
↕
BAT
to reach different areas.
28. Secret rooms
You can add hidden areas containing extra victims.
For example:
Normal route
│
▼
Door
│
├──────────► Main Hall
│
└── Secret Passage
│
▼
🩸🩸🩸
3 victims
This rewards exploration.
29. Complete Blueprint architecture
I’d structure the project like this:
BP_VampireCharacter
│
├── Movement
│
├── Jump
│
├── Transform
│ ├── BecomeBat
│ └── BecomeVampire
│
├── Flight
│
├── Bite
│
├── BiteCount
│
└── CheckLevelComplete
BP_Victim
│
├── Victim Type
├── HasBeenBitten
├── GetBitten
└── Death/Reaction
BP_VampireHunter
│
├── Detect Bat
├── Aim
├── Fire
└── Damage Player
BP_LevelManager
│
├── RequiredBites
├── LevelComplete
├── Victory
└── LoadNextLevel
WBP_HUD
│
├── Bite Counter
├── Bat/Vampire Indicator
└── Level Message
The core Blueprint
The most important gameplay chain is essentially:
PLAYER
│
Transform
│
▼
🦇 BAT FORM
│
▼
Fly Around
│
▼
Find Victim
│
▼
Press E
│
▼
Bite Collision
│
▼
Cast BP_Victim
│
▼
HasBeenBitten?
/ \
TRUE FALSE
│ │
STOP ▼
Set TRUE
│
▼
BiteCount + 1
│
▼
Update HUD
│
▼
BiteCount >= Required?
/ \
NO YES
│ │
▼ ▼
Continue LEVEL CLEAR
This gives you a simple but expandable UE5.7 foundation. You can then add animations, sprite sheets, Halloween music, particle effects, bosses, power-ups, secret areas and increasingly difficult levels without having to rewrite the core system.
Can anyone help me to make it please?