You may be looking for ships, the modern name for the colonizing playing pieces.

Tokens are markers used to keep track of the effects of powers that accumulate over time or to mark special conditions for various reasons. In previous editions, players had to remember such effects or mark them with pencil and paper, but CEO, being computerized, handled these effects automatically, and the FFG edition includes a large number and variety of cardboard tokens for this purpose, some generic and some marked for specific aliens.

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