Nebula X or NBX is the native currency of Nebula Testnet. We decided to give it its own currency, as in all truth, Nebula Testnet is an entirely different network, and we have plans to make it develop its own community and ecosystem with time.
The deployed and publicly available ledger leverages on a stable iteration of Nova Network, albeit not necessarily the last available version. Nebula Testnet is built mostly for development and testing purposes, and developers can expect similar behaviour and response from both Nebula Testnet and Nova Network, with very few nuances. Both networks also present the user with the same features for software development purposes.
For the most part, you can expect the same speed and consistency you see on Nova Network, on Nebula Testnet, but given the considerably lower computing power, resources, and number of nodes and validators present on the testnet, it might, from time to time, experience lower performance than the mainnet.
We always incentivise developers to build their platforms offering compatibility with Nebula Testnet alongside Nova Network, as it enables other developers to run tests and leverage on existing platforms while developing their own. Please don't shy away of offering support for Nebula Testnet on your application, and please reach out to our support team if you need help doing so.