IMHO.

Single-player games like Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア

Below are 13 single-player Steam games similar to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア, 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 Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア page.

Ranked picks

  1. 1
    LethalCrisis リーサルクライシス — Steam game cover

    LethalCrisis リーサルクライシス

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    横2Dでありながら「方向自由のエアダッシュ+多少敵弾をはじく」アサルトにより 敵本体に突撃+連続斬撃を繰り広げます!! *This game currently only exists in Japanese version.  However, there are people who have created unofficial English patches. https://youtu.be/k55OrMFQ7q0

    2023ActionIndieRPG17.99 USDSingle-playerSimilar games →
  2. 2
    Halved — Steam game cover

    Halved

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    Halved is a roguelike action RPG game with only 5 levels and 3 game modes, but innumerable possibilities for each run. Play as one of 5 characters and traverse the dangerous parts of the world with the help of the mysterious Father of all Machines against his rebel/tyrant son, S.A.N.E.D..

    2024ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  3. 3
    SUIKA VS MECHASUIKA — Steam game cover

    SUIKA VS MECHASUIKA

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    本作は東方プロジェクト原作の特撮風二次創作。 100mオーバーの怪獣災害「スイカ」を撃退すべく「メカスイカ」で戦います。 メカスイカは、両手・頭・体が好き勝手に同時行動可能! さらに改造で数十の必殺技を搭載し、ビルを破壊しながら大暴れするぞ!

    2024ActionIndieRPG8.99 USDSingle-playerSimilar games →
  4. 4
    Glaze Cup: Journey to the West — Steam game cover

    Glaze Cup: Journey to the West

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    This is a side scrolling action Rougelike game set in the three realms of humans, demons, ghosts, and gods. It tells the story of Lao Sha and other characters from Journey to the West before they learn from the classics

    2024ActionIndieAdventure14.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Horizon Zero Dawn™ Complete Edition — Steam game cover

    Horizon Zero Dawn™ Complete Edition

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and RPG with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    Experience Aloy’s legendary quest to unravel the mysteries of a future Earth ruled by Machines. Use devastating tactical attacks against your prey and explore a majestic open world in this award-winning action RPG!

    2020ActionAdventureRPGDeck VerifiedSingle-playerSimilar games →
  6. 6
    W.A.N.D. Project — Steam game cover

    W.A.N.D. Project

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    Fast-paced, roguelike bullet hell with deep, unique spellcrafting. Create and use overpowered, game-shattering spells by combining a multitude of magical elements. Defend Tokyo from a monstrous invasion using magic, reflexes, and game-changing combos.

    2024ActionIndie9.99 USDSingle-playerSimilar games →
  7. 7
    Super Alloy Crush — Steam game cover

    Super Alloy Crush

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    Super Alloy Crush is a fast-paced 2D roguelike brawler inspired by classics like Mega Man X. Play as Kelly and Muu (No.02) to defeat enemies and obtain the ultimate cosmic treasure: Planet AE-38. Alone or with a friend in local co-op, get ready for your biggest challenge yet!

    2026ActionSportsIndie11.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    30XX — Steam game cover

    30XX

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    Jump, shoot, and slash your way through 30XX, the roguelike action platformer you can play with a friend! Explore lush, ever-changing worlds that mix precise platforming with fevered combat. Destroy fearsome Guardians. Master unique Powers. Rediscover the thousand years we've lost.

    2023ActionIndie19.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Tower Offence! たわーおふぇんす! — Steam game cover

    Tower Offence! たわーおふぇんす!

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    "Attacks aggressively by build a lot of towers"It's a consept of this game. You can stack friend units any number of people,without limitation. "Strength in numbers" is the key to victory!

    2017ActionIndie8.99 USDSingle-playerSimilar games →
  10. 10
    Lethal Operation Episode 1 healer Rugitta — Steam game cover

    Lethal Operation Episode 1 healer Rugitta

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    キャラをじっくり育てながら広い世界を冒険する――。 そんなSTGがあってもいいじゃないか!! …というのがこのゲームのコンセプト。 ブレイクによって敵弾を消すことができ、 レベルと装備で強くなるので、STGが苦手な人でも凶悪弾幕ボスを間違いなく倒せるようになります!

    2023ActionIndieRPG8.99 USDSingle-playerSimilar games →
  11. 11
    Lethal Operation Episode 2 destroyer Rei — Steam game cover

    Lethal Operation Episode 2 destroyer Rei

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    キャラをじっくり育てながら広い世界を冒険する――。 そんなSTGがあってもいいじゃないか!! …というのがこのゲームのコンセプト。 「ルギッタ編」と比べシューティング寄りで、すべて束ねた火力はまさに一撃必殺。 大量の敵を次々に破壊していく爽快感をお楽しみ下さい!

    2023ActionIndieRPG8.99 USDSingle-playerSimilar games →
  12. 12
    Lethal Operation Episode 3 Lethal Arms of Justice — Steam game cover

    Lethal Operation Episode 3 Lethal Arms of Justice

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action and Indie with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    キャラをじっくり育てながら広い世界を冒険する――。 そんなSTGの最終編。ショットを合成して、いいとこどりのショットも作れる! シリーズ最強の敵たちに最強の武器やスキルの組み合わせで対抗し、 この物語の真実に辿り着いてください―

    2023ActionIndieRPG17.99 USDSingle-playerSimilar games →
  13. 13
    Once upon a time there was a twin-tailed sister princess who was very unfriendly. — Steam game cover

    Once upon a time there was a twin-tailed sister princess who was very unfriendly.

    Single-player alternative to Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア — playable solo, no multiplayer required. Shares Action with Lethal Crisis Proto Sphere リーサルクライシスプロトスフィア.

    敵もツインテールも超デカイ物体Xも、とにかく上に乗れさえすればなんだって、持ちあげてぶん投げることができる夢○場的アクションゲームです。 主人公の妹姫様の目の前に立ちふさがるのは、妹の所業に腹を立てていた姉姫様。 国の大事をそっちのけにした姉妹喧嘩が繰り広げられてしまいます。

    2023Action1.99 USDSingle-playerSimilar games →