Bloodworks

Bloodworks is a free top-down survival action game where you fight against an endless waves of monsters. The odds are not in your favor! In Survival mode, you find new weapons as you fight, gain overpowered 'ultimate' weapons, unlock new perks as you level up. Currently there are 20 weapons and 5 ultimates you can equip, 24 perks to choose and 15 bonuses to collect! The game is extremely moddable. You can add new weapons, monsters, perks, bonuses or even mission types.