Continuum World wallet

What is Continuum World (UM)?

Continuum World is a game before it is anything else: a world of floating islands where your avatar, a UMi, explores and gathers resources, and UM is the token those activities are denominated in. That framing matters for storage, because game tokens are handled differently from assets you buy once and leave alone. They move in small amounts and often - into the game, out of it, between players - and every one of those movements is an on-chain transaction that has to be signed.

UM is an ERC-20 style token issued on more than one network, which has two consequences worth knowing. The balances are per-network and independent, so UM held on one chain is invisible to a contract or a recipient on the other, and crossing between them needs a bridge rather than a setting. And the fee is always paid in the host network's own gas coin, never in UM, so a small working balance of that coin has to sit in the same wallet or nothing can leave it.

Supported networks in Tangem (2): Ethereum, Polygon POS.

Signing in Tangem is a tap of the card against the phone, so a run of small transfers does not mean a cable, an app to charge or a device to wake up, and the gas coin lives in the same wallet as the UM it pays for. For an asset that gets moved rather than parked, that is the friction worth removing.