This is what I call great action game with many modes. You play against other teams, try surviving never ending zombie onslaught, or you can try TD styled fun.
Deadswitch offers it all. You can try play classic Deathmatch or Team Deathmatch. When you get bored with this there are zombies in TD game or just Arena until you die. Avatar gains experience and money for buying new weapons. So many things for trying but have a look at the control I couldn’t find out how to drop bought weapons.