Single-player games like Extinction Day
Below are 13 single-player Steam games similar to Extinction Day, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Extinction Day page.
Ranked picks
- 1
Shadows of Forbidden Gods
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Simulation with Extinction Day.
Take on the role of a Dark Elder God and lead your agents to bring about an apocalypse in a fantasy world. Work in the shadows, avoiding the heroes who will try to stop you, as you bring about plague and famine, ice age and volcanic destruction, madness and never ending night.
- 2
Advisors at the End of the Universe
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
AEU is a fast paced realtime strategy and 4x hybrid. Players influence their empire to grow, fight, forge alliances or engage in trade. Players are given control over the empire's traits, research and a set of three types of abilities(Construction, Plagues and Agents) to accomplish their goals.
- 3
Ardarium
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
Watch a simulated 2D world including weather, plants, animals, and humans in this casual sandbox game about nature and life. Start meteor showers, spawn new animals, or just let things play out naturally. It's like a screensaver you can play.
- 4
Pandemic Crisis
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
In the event of a global pandemic, would your first priority be preserving lives or saving the economy?
- 5
WorldBox - God Simulator
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Indie and Simulation with Extinction Day.
WorldBox is the ULTIMATE god simulator and sandbox game. A petri dish for your fantasy civilizations. Create your own world or destroy it using many powers. Watch civilizations grow, form kingdoms, colonize new lands, sail to far continents, wars to ignite, empires to fall and towns to burn!
- 6
Ukraine Defender
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
Get ready to defend Ukraine in the intense, action-packed Combat Flight Simulator 2022! Take control of a fighter jet and engage in a race against the clock(500s) to defeat the invading Russian Z forces.Can you save Ukraine before it's too late? Get ready to find out in Combat Flight Simulator 2022!
- 7
Trump VS Covid: Save The World Clicker
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
Save the world from COVID with nukes!
- 8
Victoria II
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy with Extinction Day.
Carefully guide your nation from the era of absolute monarchies in the early 19th century, through expansion and colonization, to finally become a truly great power by the dawn of the 20th century. Victoria II is a grand strategy game played during the colonial era of the 19th century, where the player takes control of a country, guiding...
- 9
Plague Inc: Evolved
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself.
- 10
Biosys Inc
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Indie and Simulation with Extinction Day.
Biosys Inc. is a biology simulator that takes you to a new planet where you will be responsible for the process of abiogenesis. Start with a single cell and watch your ecosystem thrive by itself. All cells carry DNA that will allow them to mutate and evolve into complex beings.
- 11
Bio Inc. Redemption
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Indie with Extinction Day.
Bio Inc.: Redemption is a realistic simulation and strategy game in which you make life or death decisions. Create a deadly illness to infect and torment your victim or play as the head of a medical team and hopefully find a cure to save your human patient. Will you be the plague or preserve humanity?
- 12
Rebel Inc: Escalation
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Strategy and Simulation with Extinction Day.
A unique and deeply engaging political/military strategic simulation from the creator of Plague Inc. Balance competing civilian and military priorities and deal with a deadly insurgency in order to stabilise a war-torn country.
- 13
Rebel!
Single-player alternative to Extinction Day — playable solo, no multiplayer required. Shares Indie with Extinction Day.
Imagine yourself living under your favourite oppressive regime. Rebel! Fight waves of SWAT teams. Loot their weapons and money. Buy upgrades. Enlist allies. Face off with the corrupt government bosses. Casual top down/ dual stick shooter with short, intense gameplay and a clever AI.