Single-player games like Oh...Sir! Prototype
Below are 13 single-player Steam games similar to Oh...Sir! Prototype, 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 Oh...Sir! Prototype page.
Ranked picks
- 1
Oh...Sir!! The Insult Simulator
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
A Hilarious Insult-‘em up in which players must verbally take-out their friends and family in different game modes. Assemble witty insults using different word strings, and employ combos, criticals, continuations and more to battle your opponents both offline and online across multiple devices.
- 2
Crush Your Enemies
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
Go back to the awesome glory days of Real-Time Strategy games. Crush Your Enemies has everything you love of the genre: Planning, choosing different types of units, managing resources, taking enemy territory and outwitting your opponent with the ingenious formations of your men.
- 3
Undertale
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
UNDERTALE! The RPG game where you don't have to destroy anyone.
- 4
Little Inferno
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
Throw your toys into your fire, and play with them as they burn. An adventure that takes place almost entirely in front of a fireplace - about looking up up up out of the chimney, and the cold world just on the other side of the wall. From the creators of World of Goo and Human Resource Machine.
- 5
The Legend of Tango
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
The Legend Of Tango is a short comedy JRPG that tells the story of how Tango Fiesta was born through the medium of a classic fantasy JRPG.
- 6
Haunt the House: Terrortown
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
Haunt your way through town in the dead of night! Possess objects to scare people away from a museum, a hospital, a theatre and a cruise ship. Will you be able to scare everyone out and reclaim what has been lost, before the night is over? A side-scrolling action puzzle game starring ghosts!
- 7
Fingered
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
GUILTY! THEY ARE ALL GUILTY! FINGERED is a "whodunit" hyperrealisic police sim where you must finger the guilty and clean up this darn city using the descriptions of the local busy bodies. but everyone's perspective is different: one man's fat is another man's sexy! send him to the chair!!!
- 8
Peace, Death!
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
Peace, Death! is an arcade simulator with difficulties. In this game you play as the Reaper working for your boss, Death, and send clients to Heaven, Hell, or Purgatory.
- 9
Growing Up
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
This is the story of your life. Experience the entire journey from toddler to adulthood. Go to schools, learn new things, meet new friends, and have wild adventures! Every choice you make will influence your future career, and decide who your romantic partner will be. Who will you become?
- 10
Weedcraft Inc
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
Weedcraft Inc explores the business of producing, breeding and selling weed in America, delving deep into the financial, political and cultural aspects of the country's complex relationship with this troublesome and promising plant.
- 11
Floodland
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required.
A society survival game set in a world destroyed by climate change. Explore, scavenge and build a city to unite the clans. Conflicting cultures and limited resources mean you need to make tough choices; have you got what it takes to lead your people into a new era of humanity?
- 12
Oh...Sir! The Hollywood Roast
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required. Shares Indie with Oh...Sir! Prototype.
The boys are back , and they look better than ever! Oh…Sir! The Hollywood roast is a brand new spinoff to the surprise indie hit 0f 2016, Oh…Sir!! The Insult Simulator. This time around we’re taking tinsel town down a few notches, whilst classing up the joint.
- 13
The Last Alchemist
Single-player alternative to Oh...Sir! Prototype — playable solo, no multiplayer required.
Master the wonders of alchemy! Solve alchemical puzzles by transforming and combining Essences. Craft items, tools and machines. Explore the enchanting world, gather peculiar resources, and befriend the Agari, adorable mushroom folk who will help you find the cure for your mysterious disease.