---
key: mechanic/boss-fight-atlas--boss-wraparound-projectile
type: mechanic
id: boss-fight-atlas--boss-wraparound-projectile
lang: en
title: Wraparound projectile
summary: A projectile exiting one boundary returns from another side.
updatedAt: '2026-10-22'
status: active
url: >-
https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-wraparound-projectile/
jsonUrl: >-
https://gamemechanics.pro/api/v1/knowledge/en/mechanic/boss-fight-atlas--boss-wraparound-projectile.json
markdownUrl: >-
https://gamemechanics.pro/content/knowledge/en/mechanic/boss-fight-atlas--boss-wraparound-projectile.md
aliases: []
tags:
- Boss fights
- 'Space, movement, and perception'
sourceIds:
- source-ed55bd51a5646ed6
- source-a24573314a2a25c8
- source-69bc6dfcfb0294aa
- source-2b0dd487a030d4df
- source-9db9d896c16a66ba
- source-945019fe5d82d809
- source-e9c0e541779707a8
- source-dcfe77d264990352
- source-c4ebe8def2027ec7
- source-3dfbbdefc3891324
sources:
- id: source-ed55bd51a5646ed6
title: 'Boss Fight Atlas: Wraparound projectile (RU)'
url: >-
https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/wraparound-projectile/
verifiedAt: null
- id: source-a24573314a2a25c8
title: 'Boss Fight Atlas: Wraparound projectile (EN)'
url: >-
https://polyakovin.github.io/boss-fight-atlas/en/mechanics/wraparound-projectile/
verifiedAt: null
- id: source-69bc6dfcfb0294aa
title: 'Hush · The Binding of Isaac: Repentance'
url: 'https://www.youtube.com/watch?v=o-emlDM8Gp0&t=1s'
verifiedAt: null
- id: source-2b0dd487a030d4df
title: The Gunner · Orbital Bullet
url: 'https://www.youtube.com/watch?v=czXPRDs1ylg&t=1s'
verifiedAt: null
- id: source-9db9d896c16a66ba
title: Bowser · Super Mario Galaxy
url: 'https://www.youtube.com/watch?v=XftwD1aqZw4&t=2075s'
verifiedAt: null
- id: source-945019fe5d82d809
title: GDC · Itay Keren — Boss Battle Design Fundamentals and Retrospective
url: 'https://www.gdcvault.com/play/1024921/Boss-Up-Boss-Battle-Design'
verifiedAt: null
- id: source-e9c0e541779707a8
title: 'The Binding of Isaac: Rebirth Wiki — Hush'
url: 'https://bindingofisaacrebirth.wiki.gg/wiki/Hush'
verifiedAt: null
- id: source-dcfe77d264990352
title: Orbital Bullet guide — The Gunner
url: 'https://lalalalulun.com/game-review/orbital-bullet/'
verifiedAt: null
- id: source-c4ebe8def2027ec7
title: GameFAQs — Super Mario Galaxy Boss Guide
url: 'https://gamefaqs.gamespot.com/wii/915692-super-mario-galaxy/faqs/51303'
verifiedAt: null
- id: source-3dfbbdefc3891324
title: 'The Binding of Isaac: Repentance'
url: 'https://www.youtube.com/watch?v=o-emlDM8Gp0&t=55s'
verifiedAt: null
relations: []
placements:
- catalogId: boss-fight-atlas
id: boss-wraparound-projectile
title: Boss fights
url: >-
https://gamemechanics.pro/en/mechanics/boss-fight-atlas/#boss-wraparound-projectile
categoryIds:
- catalog-part-10
supersededBy: []
attributes:
preview:
updatedAt: '2026-10-22'
title: Wraparound projectile
description: A projectile exiting one boundary returns from another side.
image:
src: images/mechanics/boss-final-o-emldm8gp0-55.webp
width: 640
height: 360
game: 'The Binding of Isaac: Repentance'
sourceUrl: 'https://www.youtube.com/watch?v=o-emlDM8Gp0&t=55s'
originalUrl: 'https://www.youtube.com/watch?v=o-emlDM8Gp0'
sourceFrameSeconds: 55
credit: Nicalis / Edmund McMillen; gameplay capture by thereisnofuture
rights: >-
Game graphics © Nicalis / Edmund McMillen. Gameplay recording by
thereisnofuture. Original visible source markings retained. All rights
reserved; excluded from portal MIT and CC BY 4.0.
caption: >-
The Binding of Isaac: Hush’s purple Continuum shots pass through arena
edges
alt: >-
The Binding of Isaac: Hush’s purple Continuum shots pass through arena
edges
markers:
- x: 95
'y': 62
label: Continuum carries projectiles across an edge to the opposite side
tips:
- >-
Signal exit and reentry points and preserve a predictable path after
wraparound.
examples:
- title: 'The Binding of Isaac: Repentance'
url: 'https://www.youtube.com/watch?v=o-emlDM8Gp0&t=55s'
endsAt: null
provenance: >-
Editorial reference index based on the 124 public Boss Fight Atlas mechanic
pages checked on 2026-10-20. Original concise RU/EN definitions by
gamemechanics.pro; source categories, game/boss associations and reference
URLs retained from the atlas. Linked materials retain their original rights;
references are upstream attributions, not independent verification.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/boss-fight-atlas
---
# Wraparound projectile
id: boss-fight-atlas--boss-wraparound-projectile
type: mechanic
key: mechanic/boss-fight-atlas--boss-wraparound-projectile
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-wraparound-projectile/
A projectile exiting one boundary returns from another side.
## At a glance
[The Binding of Isaac: Repentance](https://www.youtube.com/watch?v=o-emlDM8Gp0&t=55s) · Game graphics © Nicalis / Edmund McMillen. Gameplay recording by thereisnofuture. Original visible source markings retained. All rights reserved; excluded from portal MIT and CC BY 4.0.
[Source recording](https://www.youtube.com/watch?v=o-emlDM8Gp0), 55 s
1. Continuum carries projectiles across an edge to the opposite side
- Signal exit and reentry points and preserve a predictable path after wraparound.
- [The Binding of Isaac: Repentance](https://www.youtube.com/watch?v=o-emlDM8Gp0&t=55s)
## How it works
A projectile exiting one boundary returns from another side.
## Variants
### How the technique works
- A projectile exiting one boundary returns from another side.
## Context and limits
A concise reference to all 124 Boss Fight Atlas mechanics across its 14 source sections. Each entry includes a definition, full RU/EN lesson links, game references and further reading retained from the source. Animations and detailed rules remain in the atlas.
## Connected materials
## Sources and provenance
Editorial reference index based on the 124 public Boss Fight Atlas mechanic pages checked on 2026-10-20. Original concise RU/EN definitions by gamemechanics.pro; source categories, game/boss associations and reference URLs retained from the atlas. Linked materials retain their original rights; references are upstream attributions, not independent verification.
- [Boss Fight Atlas: Wraparound projectile (RU)](https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/wraparound-projectile/) (id: source-ed55bd51a5646ed6)
- [Boss Fight Atlas: Wraparound projectile (EN)](https://polyakovin.github.io/boss-fight-atlas/en/mechanics/wraparound-projectile/) (id: source-a24573314a2a25c8)
- [Hush · The Binding of Isaac: Repentance](https://www.youtube.com/watch?v=o-emlDM8Gp0&t=1s) (id: source-69bc6dfcfb0294aa)
- [The Gunner · Orbital Bullet](https://www.youtube.com/watch?v=czXPRDs1ylg&t=1s) (id: source-2b0dd487a030d4df)
- [Bowser · Super Mario Galaxy](https://www.youtube.com/watch?v=XftwD1aqZw4&t=2075s) (id: source-9db9d896c16a66ba)
- [GDC · Itay Keren — Boss Battle Design Fundamentals and Retrospective](https://www.gdcvault.com/play/1024921/Boss-Up-Boss-Battle-Design) (id: source-945019fe5d82d809)
- [The Binding of Isaac: Rebirth Wiki — Hush](https://bindingofisaacrebirth.wiki.gg/wiki/Hush) (id: source-e9c0e541779707a8)
- [Orbital Bullet guide — The Gunner](https://lalalalulun.com/game-review/orbital-bullet/) (id: source-dcfe77d264990352)
- [GameFAQs — Super Mario Galaxy Boss Guide](https://gamefaqs.gamespot.com/wii/915692-super-mario-galaxy/faqs/51303) (id: source-c4ebe8def2027ec7)
- [The Binding of Isaac: Repentance](https://www.youtube.com/watch?v=o-emlDM8Gp0&t=55s) (id: source-3dfbbdefc3891324)
CC-BY-4.0 · gamemechanics.pro contributors