Yes, Universal Tower Defense X is the same game as Universal Tower Defense Z, X was renamed to Z on July 9, 2026, keeping the same place, account, and progress, it's a rename, not a new game.

Yes, an item bought for Universal Tower Defense Z works the same if you still call it Universal Tower Defense X, since both names point to the exact same game and account, nothing about your actual game world changes based on which name a listing uses.

Evolving and Etherealizing are both progression systems for upgrading a unit's power, applied on top of a unit's base gacha rarity rather than replacing it.

Yes, you keep the Units, Rerolls, and Bundles included with my purchase, exactly as shown in the listing.