Phantom Castle (the castle battles in the Ninja World Clash menu) is open for testing.
- Climb the castle floors against other teams.
- When not enough players are around, bot teams fill in. They get stronger floor by floor, up to 7-star and limit-broken characters near the top.
- Some opponents are "Ghost of ..." teams, copied from real players' current teams. You never meet your own.
- Wins pay Clash Coins.
Ultimate Showdown
- Real players are still matched first, but if nobody is found within about 15 seconds you now face a CPU team, in every league.
- CPU teams are much stronger, with levels and abilities that grow with the league. Some are ghosts of real players' teams too.
- Wins pay Clash Coins, which you spend in the Clash Coin tab of Granny Cat's Hiding Place. The amounts may still change.