IMHO.

Single-player games like PROTOTYPE

Below are 8 single-player Steam games similar to 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 PROTOTYPE page.

Ranked picks

  1. 1
    The Mythical City — Steam game cover

    The Mythical City

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    Protect the magic crystal, to which waves of enemies are coming!

    2023ActionSportsStrategy0.79 USDSingle-playerSimilar games →
  2. 2
    Rover Wars — Steam game cover

    Rover Wars

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    What if MOBAs and RTS games had a baby? Rover Wars combines resource management, farming, building and strategy into an intense tug of war. Fight in an interplanetary campaign and challenge your friends in the configurable Battle Mode. Rover Wars might be your gateway ticket into the strategy genre.

    2020ActionStrategyIndie6.99 USDSingle-playerSimilar games →
  3. 3
    Vacuum cleaner robot simulator: pile sos edition — Steam game cover

    Vacuum cleaner robot simulator: pile sos edition

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    In the game you control a robot vacuum cleaner! You have to avoid collision with different obstacles in order not to break down and reach the very end!

    2023ActionSportsStrategy0.79 USDSingle-playerSimilar games →
  4. 4
    Skeletos Sword — Steam game cover

    Skeletos Sword

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    Skeletos Sword plunges players into a thrilling third-person sword battle against a legion of crazed skeletons.

    2024ActionSportsStrategy0.80 USDSingle-playerSimilar games →
  5. 5
    YYDS成神之路 — Steam game cover

    YYDS成神之路

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Strategy and Casual with PROTOTYPE.

    初衷:想起当年的网吧5连坐,想起我的第一个6300,耳边还仍然萦绕着那一声声激情的叫喊...致敬那曾经的热血和回不去的青春。

    2022StrategyIndieCasual1.99 USDSingle-playerSimilar games →
  6. 6
    Only Down: Gravitation Up — Steam game cover

    Only Down: Gravitation Up

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    Only Down: Gravitation Up — descend through the centuries without letting gravity and fans knock you off course! Evolve and conquer levels in Only Down: Gravitation Up.

    2025ActionSportsStrategy0.49 USDSingle-playerSimilar games →
  7. 7
    The Killer — Steam game cover

    The Killer

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    Dominic, an assassin is hired to kill a farmer who is fighting over land with a wealthy local man, in the middle of your mission someone notices something strange and calls the police, so Dominic must face the cops to get out of the place without getting caught.

    2023ActionStrategyIndie0.99 USDSingle-playerSimilar games →
  8. 8
    Agent 01 — Steam game cover

    Agent 01

    Single-player alternative to PROTOTYPE — playable solo, no multiplayer required. Shares Action and Strategy with PROTOTYPE.

    Laura, the daughter of a renowned businessman, hires Markz to rescue her father from a kidnapping. Markz then discovers the captivity location and devises a strategy to safely rescue the businessman.

    2022ActionStrategyIndie0.99 USDSingle-playerSimilar games →