I appreciate that you are trying to map for a game. But to create features that do not exist is against OSM policy of only mapping verifiable features.

OSM data is used for many legitimate purposes. Removing streams, adding or removing wooded areas can result in issues for researchers and government agencies. Just adding names to fields that have no name is problematic by causing other mappers to spend time trying to verify the name.

Because of this, your edits will be reverted. A month long block will be placed on your account.

Best,
Clifford Snow
OpenStreetMap Foundation
Data Working Group