Sanctum 2

the game is my towerdefence standard.
the scifi stylre is good.
the comic cutsenes are a bit cheap but get the job done.
the towerbases and towers dropping in from space are awesome
the shooting is a bit lackluster but its the towers that have do the bulk of the work anyway.
running around upgrading or buffing towers where needed is fun and satisfying.
every tower has 3 upgrade steps and then you can pump the damage up as much you want
you make the maze yourself and you see the changes that brings to the enemy routes in real time.
you earn more towers weapons and perks as you progress.
create a build suited to your playstyle.
when you complete the game you can use any perk or weapons from any character.
you can play this game in multiplayer.
each level has has some fun secrets or extra mines to find.