Sandbox / Bat Family Crossover Wick Check

Anime

• HeartCatch Pretty Cure!: Intra-Franchise Crossover
• Pretty Cure All Stars: Intra-Franchise Crossover.
• Yu-Gi-Oh!: Bonds Beyond Time: Intra-Franchise Crossover.

Books

• Literature.Star Trek Destiny: Self-admitting Crisis Crossover.
• The Black Coats: Crisis Crossover.

Real Life

• Tropes Ato F: Semi-correct usage.

Fanfic

• The MUSHU-Verse: Standard Crossover.
• Amazing Fantasy: Only qualifies in the context of another work.

Film

• A Muppet Family Christmas: Massively Multiplayer Crossover