DEC & SPS are essential tokens in the splinterlands economy. Both of these are available on Binance Smart Chain & Ethereum with the following smart contracts.
SPS Smart Contracts
DEC Smart Contracts
Smart contracts can also be found on the coinmarketcap pages of DEC & SPS. These smart contracts are used to add custom tokens in metamask wallets for display. Here is guide on how to add custom tokens on metamask.