Realm Rush
Enemies are at the gates! You must place your towers (and then replace them) in order to defeat incoming horde.
You have 5 towers that you can place freely (except on the enemies' path) but after the 5th tower is placed, every new tower replaces your oldest one. This is a limitation that you could maybe use to your advantage.
Music by :
Ultimate Game Music Collection by John Leonard French:
https://assetstore.unity.com/packages/audio/music/orchestral/ultimate-game-music...