UPX, SPARKLET & STEM

UPX

UPX is Upland's in-game transactional currency. It powers every trade, every property mint, and every passive yield.

Key facts

  • Fixed rate. 1,000 UPX = $1 USD for purchases on the web.
  • Not tradable outside Upland. This is by design — it keeps the marketplace honest.
  • Transferable within Upland. See the extra section.
  • Buy with anything. Credit card, PayPal, crypto, or in-app purchase on mobile.

What you use UPX for

  • Mint and trade properties.
  • Buy structures, vehicles, and ornaments from the store.
  • Pay transaction fees, treasure hunt fees, and visitor fees.

SPARKLET

SPARKLET is Upland's resource token. It powers everything that builds, manufactures, or fuels — and it lives both inside Upland and on the wider on-chain economy.

Inside Upland

  • Construct buildings and structures.
  • Manufacture vehicles, ornaments, and UGC items in factories.
  • Generate seeds at Nurseries.
  • Fuel vehicles for travel, racing, and Trade Routes.
  • Operate Metaventures.
  • Merge Uppies.

Two modes

  • Staked SPARKLET. Allocated to a task for its duration. Returns to your wallet when the work finishes.
  • Spent SPARKLET. Consumed outright. Used for items like generating a seed or minting a Legit.

Outside Upland: the ERC-20 token

SPARKLET is also a tradable ERC-20 token on Ethereum and Base. Architects can bridge in SPARKLET to use it within Upland, or bridge it out to trade on external exchanges, where permitted. Get the latest price on CoinMarketCap.

Watch how it works:

If you're interested in the original White Paper, follow this link.

STEM

STEM is the dedicated currency of Upland's Life Systems. Account-bound, non-tradable, broadly earnable. STEM exists so every Architect can keep plants alive, run a farm, and engage with animals — no token-acquisition barrier.

What STEM is used for

  • Feeding plants to maintain Health.
  • Caring for animals.
  • Future Life-system gameplay.

How to earn STEM

  • Daily gameplay and engagement.
  • Season Pass rewards.
  • Farming STEM-bearing crops and exchanging Resource Troves at supermarkets.
  • In-game events.
  • Permanently available in the Upland Store for Architects who want to accelerate.

Plants, farming, and animals live in the Residents & Life space.