Blockchain gaming company Immutable has announced the launch of its "Passport" tool geared towards increasing interoperability.

Immutable's Passport tool is designed to simplify "the sign-up process for players by providing them with a universal profile that enables them to carry their identity, achievements, and digital assets across different online games and marketplaces," according to a statement. 

Initially, the tool, meant to deliver on the promise of interoperability, is available across five gaming titles and marketplaces with more than 500,000 users, the company also said. Those games and marketplaces include "Gods Unchained," "Blocklete Golf," "Bleacher Report Watch2Earn," TokenTrove, and AtomicHub, according to the statement.

Although unclear how players will use …