Board Game Accessory Ultra‑Pro Terraforming Mars Big Storage Box Extension

Storage box extension for the board game Terraforming Mars produced by Ultra‑Pro. Designed to expand an existing Big Storage Box, this extension increases capacity to accommodate additional cards, components and tokens from base game expansions and large collections. The accessory is intended to integrate with the Ultra‑Pro Big Storage Box system to keep game elements organized, reduce setup time and provide a single compact storage solution between sessions.

Advantages

The extension provides increased internal volume without requiring a separate container, preserving the original box footprint and tabletop footprint. Its layout is compatible with standard card and token sizes used in Terraforming Mars, enabling neat vertical or horizontal storage of card stacks and separators for components. Constructed for regular handling, the extension simplifies sorting and helps protect cards from bending and wear when the full game and expansions are stored together.

Suitable for

• Players who own expansions of Terraforming Mars and need extra card and component capacity
• Board game collectors consolidating multiple copies or expansions into one storage system
• Game groups seeking faster setup and teardown by pre-organizing cards and tokens

Key specifications

• Compatibility: fits with Ultra‑Pro Big Storage Box family
• Function: additional storage capacity for cards, tokens and small components
• Material: rigid storage-grade board and plastic reinforcements for structural stability
• Internal layout: compartments designed for stacked cards and separated token areas
• Finish: matte exterior to reduce scuffs and fingerprint visibility

How to use

Attach the extension to the existing Ultra‑Pro Big Storage Box following the alignment guides on both pieces so that the lid and base close securely. Sort cards into stacks sized to the provided compartments, place tokens and small components in the dedicated areas, and use any included dividers to prevent shifting during transport. Ensure cards are sleeved if you use protective sleeves—check that the stacks fit comfortably in the compartments before closing the lid.

Usage recommendations

Store the assembled box in a dry, cool place away from direct sunlight. If you use card sleeves, verify fit with the extension to avoid compression. For long-term storage, place heavier components at the bottom compartments and lighter card stacks above to maintain structural balance.