From BlockchainGaming Wiki

Hive (ticker: HIVE) is a fork of the Steem blockchain, which was originally designed around a popular Reddit-like social network called Steemit. They are still technically similar: to achieve network consensus, token holders vote for Witnesses who have the power to mint blocks and (with majority support among each other) change network rules. Token holders vote by delegating HIVE to these Witnesses to conduct proof-of-stake.

The community decided to split after what was perceived as a hostile takeover by TRON founder Justin Sun.[1] His acquisition of Steemit Inc (the company that built Steem) exacerbated concerns regarding their 80% premine and subsequently excessive power. When community-appointed witnesses voted almost unanimously to freeze his coins in response, Sun convinced exchanges to vote with their customers' coins for new witnesses under his influence. He has subsequently frozen STEEM tokens belonging to any major Hive advocates, although many are now held by Bittrex pending litigation.[2]

Hive is differentiated from Steem mainly by its larger active user base and greater variety of dapps,[3] which is arguably the result of Justin Sun's unpopularity with the community.[4] Beyond social media, Hive is also notable for the large proportion of gaming applications on its platform.[5] These are generally browser-based and rely on Keychain, an extension analogous to MetaMask. Blockchain card game Splinterlands is the oldest and still the best-known, but there are now many others including: