If you just want to design a maxed base, use the Boom Beach Planner website. It is a sandbox tool where you can place any building at any level, spawn any troop, and simulate attacks. It is technically not a game, but it scratches the itch of a "fixed" private server for architects and strategists.
Instead of risking a private server, buy an already-maxed HQ25 account from a reputable middleman service (like G2G or Eldorado). For $50-$100, you get a fully fixed account with all troops, heroes, and maxed landing crafts. This is the closest you can get to a private server experience without breaking Supercell’s rules (account trading is a grey area, but less likely to get your device banned than a modded APK). private server boom beach fixed
Fixed an issue where players were not receiving the correct amount of Keycards . Status of Private Servers If you just want to design a maxed