Without Wormhole, the trains on each track would be stuck. They couldn't visit other tracks or share things with them. This is a big problem for blockchains, which are like these separate tracks.
Wormhole fixes this problem. Even if the tracks don't usually work together, Wormhole makes them connect. If a game on the Solana track uses Wormhole, then people on the Ethereum track can play it too. This means everyone can use the best parts of each track, and they're not stuck on just one.
This connection helps the games and other things on the tracks work better and get ready for new things in the future. It's like making friends with people on different tracks and finding new ways to have fun together!