you can use GSTPacker plugin to pack your game into one exe. This exe can have a new icon. I think this works with nacasi too.

You can change the Game.exe after publishing, but it will never run (only possible with A6pro).

Andreas
GSTools - Home of
GSTScript 0.9.8: lua scripting for A6/7/8
GSTNet 0.7.9.20: network plugin for A6/7/8
GSTsqlite 1.3.7: sql database plugin for A6/7/8
3DGS Codebase: 57 snippets || 3DGS Downloads: 248 files