DIFFERENCES BETWEEN THE PROLOGUE AND THE FULL VERSION Play up to wave 20 at the first difficulty level Game Modes: 1 (Prologue) -vs- 4 (Full Game) Turrets: 4 (Prologue) -vs- 25 (Full Game) Perks: 4 (Prologue) -vs- 48 (Full Game) Mods: 48 (Prologue) -vs- 64 (Full Game) Mutations: 16 (Prologue) -vs- 24 (Full Game) Weapons: All 70! Dive into a microscopic alien world, radiating with bioluminescent life and unspeakable horrors. This free Prologue will give you a taste of what's in store in the full game - try out all 70 of the base game's weapons, get to grips with the weapon-combining mechanics, and research permanent upgrades to survive the microbe assault up to wave 20 in the first game mode (you'll keep your progress in the full game!) Pair DNA nucleotides A denine (rapidfire), C ytosine (precision), G uanine (spread), T hymine (explosive) to discover wild hybrid bioweapons! Bomb + Shotgun combines explosives with spread to create Blast Shotgun! Bomb + Bomb doubles down on explosive power to make Bazooka! Blast Shotgun + Shotgun forms the all-powerful Flak Cannon! Learn more about each weapon and microbe from the in-game database containing all your discoveries. Mutations alter the challenges you face each run All 50 Ambient & Electronic Tunes from the Full Game that adapt to the current mood and intensity Accessibility Options for colourblindness and motion sickness