This application is a strategy game for Mac users who enjoy playing tower defense missions on their computers. Royal Defense provides you with numerous hours of gameplay, brings you nicely drawn animations and graphics, and allows you to create multiple player profiles.
The program doesn't offer you an integrated help guide. However, before starting a mission, the app provides you with useful information regarding new enemy units, weapons, and all available upgrades.
Your goal is simple: prevent enemy units from attacking your tower by placing weapons on their route. The more units you kill, the more coins you collect (with the coins you can acquire extra weapons, upgrade artillery, etc). You also receive gems at the end of each mission (the quantity depends on the amount of stars you receive after each level).
This new version of Royal Defense gives you access to additional challenges, the ability to use gems to build and upgrade towers, four new enemy units.
Cutting a long story short, I'd say it's worth installing Royal Defense on your Mac. This game is very addictive and entertaining, offers dozens of challenges, and is free of charge.