The Kusama network is Polkadot's experimental, community-focused R&D network. If you held the DOT indicator token at the time of the genesis block of Kusama, you are entitled to claim an equivalent amount of KSM on the Kusama network.
As stated on Google, 'Kusama is a scalable multi-chain network for radical innovation and early stage Polkadot deployments. Expect Chaos. No promises'.
With competition like this, Ethereum and CArdano will need to be on top of their games to win the race.
PS. They certainly do not luck in blockchain knowhow nor creativity 👈😹