Isekai SOS

Roguelike Card Deck Builder

Free · Designed for iPad

An unknown force is growing across the universe, draining the energy of every world it touches. Earth has sent out a fleet to answer their calls for help. When a world sends a summons, we open a portal to it. If the world still has energy, the portal stays open. If it has run dry, we spend a Spacetime Key to keep the gate alive. Isekai SOS is a fast, minimalist roguelike deck-builder. Every run has two parts: prepare at the camp, then fight the boss who is draining the kingdom's power. HOW IT PLAYS - At the camp (steps 1 to 9): open chests and altars, then choose 1 of 3 cards or upgrades to add to your deck. - The final battle (step 10): face the boss with the deck you built. - Only three numbers to manage: Health, Armor and Attack. Armor absorbs damage first, but it resets every turn, so every card play is a real decision. BUILD YOUR STYLE Mix cards from different archetypes, from armor stacking and shield-based damage, to berserker attack ramping, to armor-piercing strikes. Every choice pulls your deck in a different direction. RESTORE THE POWER Each victory relights another town in the kingdom. Once every town is powered again, keep pushing in boss rush mode: bosses grow stronger with every win, and your goal becomes beating your own record for the longest streak. KEEP THE LIGHTS ON Bosses retake towns while you are away, so come back and defend your progress. FEATURES - Short runs that fit into a few minutes - Multiple card archetypes with real deck-building trade-offs - Boss rush mode with personal best tracking - Daily tasks and bonus rewards - No account needed. Your progress stays on your device. The game contains ads. Optional ads can be watched for extra keys and rewards.

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The developer, YU PEI LIN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Usage Data
    • Diagnostics

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
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Information

Seller
YU PEI LIN
Size
94.2 MB
Category
Card
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and Traditional Chinese
Age Rating
13+
  • 13+
  • Learn More
  • Frequent
    Cartoon or Fantasy Violence

    Infrequent
    Guns or Other Weapons

    Contains
    Advertising
Copyright
© 2026 YU PEI LIN
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