Games That Let You Design Your Own Board (Like Life or Monopoly)

No single game is called "Design Your Own Life/Monopoly," but several let you customize heavily:

Official Customizable Editions

• Monopoly "Custom" / "My Monopoly" (Hasbro): Upload photos, rename properties, print custom board (via Hasbro website or 3rd party services).
• The Game of Life (Hasbro): Some editions include blank career/salary cards, sticker sheets for spaces.
• Catan: Scenario Packs & Fan Expansions: Official variants (Seafarers, Cities & Knights) + massive community scenarios on Catan.com.

Games Built for DIY Design

• The Game of Life (Classic 1960s/70s): Included a blank board template to draw your own path.
• Blank Board Game Kits: Create Your Own Board Game (MindWare), Game Design Kit (The Game Crafter) – boards, cards, dice, meeples, rulebook template.
• Tabletop Simulator (Steam): Digital sandbox – import any image, script rules (Lua), playtest online. Huge Workshop library.
• BoardGameGeek "Design" Forums: Community feedback, templates, contest.

Print-on-Demand Manufacturing

• The Game Crafter – Prototype to small run (no minimum).
• Print & Play Productions, DriveThruCards, MakePlayingCards – Card/board printing.

Start with Tabletop Simulator (digital) or a Blank Kit (physical) to prototype fast.