Melty Blood hitboxes define the precise frames where attacks collide, shaping every block, dodge, and combo in Type-Moon versus titles. Understanding these collision volumes and their timing is essential for both technical execution and high level match reading.
Mastering frame data without visualizing hitboxes is like tuning an engine without seeing the pistons, so this guide maps out the core systems that drive competitive play in Melty Blood.
| Attack Type | Hitbox Start | Active Frames | Typical Use Case |
|---|---|---|---|
| Strike (A) | 2F Startup | 8F Active | Fast pressure and combo links |
| Slash (B) | 3F Startup | 6F Active | Area control and spaced pokes |
| Heavy (C) | 5F Startup | 10F Active | High damage, combo enders |
| Special (D) | 4F Startup | 12F Active | Rangapike tools and zoning |
Understanding Hitbox Registration Windows
Startup and Active Frames
Every move in Melty Blood has a precise sequence of startup frames, an active window where the hitbox is valid, and a recovery period. Hitting an opponent during the active window registers a successful collision, while early or late contact results in whiff or trade.
Body Part Prioritization
Character models prioritize specific hurtboxes such as the head, torso, and limbs, which determine whether an attack leads to a guard crush, a crush trigger, or a simple block. Recognizing these priorities allows you to bait defensive options and punish reactions.
Hitbox Scaling Across Game Versions
Patch Driven Adjustments
Balance patches across Melty Blood Actress Again and Re:Act adjust hitbox size, startup, and active frames to refine pacing and prevent unintended infinites. These changes can shift which tools are safe on block and which can be punished aggressively.
Version Specific Practice
Players transitioning between versions must retrain muscle memory, because even minor shifts in hitbox timing alter combo windows and oki setups. Consistent exposure to a single build builds reliable internal timing that translates into cleaner execution.
Hitbox Interaction With Movement
Airdash and Invulnerability
Certain airdash entries grant brief invulnerability that can completely ignore grounded attacks, while others leave hurtboxes active that can be counter hit. Mapping these frames helps you choose safer crossups and anti air approaches.
Low and Overhead Traps
Mixing lows that slide under standing hurtboxes with overheads that must be guarded high creates layered pressure. Accurate hitbox data ensures that meaty mixups land during the brief window where the opponent cannot instant react.
Training Mechanics and Hitbox Mastery
Dummy Testing and Hitstop Observation
Training mode lets you freeze frames on hit, revealing exactly where hitboxes appear and how much pushback occurs. Observing hitstop duration informs whether a combo can sustain heat meter gain or needs tighter links to remain safe.
Pressure and Oki Tool Setup
After a knockdown, precise hitbox placement on mixup mixers determines whether a meaty attack plus overhead crosses up the opponent or gets teched safely. Structuring pressure around guaranteed hits builds consistent frame advantage and scoring opportunities.
Advanced Hitbox Mastery Roadmap
- Review frame data tables to identify safe active windows for key punishers.
- Record matches and scrub through whiffed confirms to visualize missed hitbox alignment.
- Design practice routines that alternate meaty mixups with instant overheads.
- Track patch notes that explicitly mention hurtbox size, startup, or active changes.
- Pressure testing in training mode to confirm blockstun and hitstop consistency.
- Study high level players to see how they exploit hitbox advantages during oki sequences.
FAQ
Reader questions
How can I reliably test hitbox timing in training mode?
Use frame stepping and dummy freezing to see exact hurtbox positions, then practice links that depend on tight hitstop aware timing to confirm safe damage and oki setups.
What should I do when an opponent consistently beats my meaty mixup with tech rolls?
Vary the delay between your mixup and meaty attempt, add overhead mixups that must be teched differently, and punish tech attempts with guaranteed crush triggers.
Are hitboxes the same for all characters in Melty Blood Re:Act?
No, each character has unique hurtbox shapes, hurtbox priority, and move properties, so tools that work against one cast may be unsafe or whiff entirely against another.
How do patch changes affect competitive tournament preparation?
Patches can shift combo damage, blockstun, and hitbox safety, so tournament preparation must include updated dummy testing, frame trap practice, and rollback adjustment drills.