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Watch trailer on Steam ↗Caldra
Dolphin Star · Published by Dolphin Star
Mixed — 69% positive (16 reviews)
Last updated 28 Sept 2026
Deckbuilding, tactics, and dramatic comebacks — the ultimate competitive card game! Buy and sell cards to strengthen your deck and fight for victory. Disrupt your opponent or seize the moment to strike. Caldra is a competitive deck-building card game driven by strategy and mind games.
Free To Play, Strategy, Early Access · 2026 · More free games
About this game
Game Overview
Step into Caldra, a competitive deck-building card game where trading and strategy decide the outcome of battle!
Players strengthen their decks by buying and selling cards with coins during the match, building their strategy while reading their opponent’s moves.
There is no cost to play cards.
How you use your hand, which cards you choose to acquire, and the moment you decide to make your move—all of it shapes your strategy.
With deep mind games and strategic decisions until the very last play, every turn can change the outcome of the match.
Features
■ Buy and Sell Cards with Coins
Earn coins during the game to buy and sell cards, building and adapting your deck as the battle unfolds. Flexible deck management is key to victory.
■ No Cost for Playing Cards
There is no cost required to play cards. The way you use your hand and the order in which you play your cards become the core of your strategy.
■ Best-of-Three Mind Games
Matches are decided in a best-of-three rounds. Careful resource management and tactical decisions in each round will determine the winner.
System Requirements
Will my PC run this? →Minimum
- OS: Windows10
- Processor: Intel Core i5
- Memory: 4 GB RAM
- Storage: 2 GB available space
Recommended
- OS: Windows11
- Processor: Intel Core i8
- Memory: 8 GB RAM
- Storage: 4 GB available space
Supported Languages
Latest news
Patch NotesOfficial
Caldra: 0.0.5 Update
Patch Notes As Wendela flowers begin to add their colors to the town, how are all you Owners doing? This update brings some major new features to Caldra. Thank you very much for all your feedback! Now then, let’s take a look at the new features! Changes to the Time Limit System The time limit system has been changed so that each game now randomly uses one of two formats: the “Turn Limit System” or the “Time Bank System.” Turn Limit System: At the start of each turn, players have a time limit of about 1 minute to take their actions. Time Bank System: At the start of the game, players are given about 300 seconds of available time. At the start of each turn, about 60 additional seconds are added to their remaining time. Which of these two systems is used will be decided randomly for each game. Since this is an experimental feature, we plan to make the final decision based on feedback about which system players prefer. {STEAM_CLAN_IMAGE}/46046997/9e93eb62e4b5f612d55f77a1dbac63343ba0694c.png Battle History Display We received requests for a feature that lets players look back at what happened during battle, so we have added a battle history display. Now you don’t have to worry even if you miss an important moment. {STEAM_CLAN_IMAGE}/46046997/fd09f01a584322794739435f34de3e311c6b8a40.gifRead full article on Community Announcements (Darjeeling)AnnouncementsOfficial
Announcement Regarding Future Updates for Caldra
As the heat arrives and the season comes when Volvolo can bear it no longer and bursts, how are all you Owners doing? Today, we would like to share a preview of upcoming updates for Caldra. Battle History Display We received requests for a feature that lets players look back at what happened during battle, so we are currently working on a battle history display. This feature is planned to be released soon. {STEAM_CLAN_IMAGE}/46046997/0373ba3b15fff530a0e8a3d418b6286661192d96.png Changes to the Time Limit System We will be changing the time limit system so that each game randomly uses one of two formats: the “Turn Limit System” or the “Time Bank System.” Turn Limit System: At the start of each turn, players have a time limit of about 1 minute to take their actions. Time Bank System: At the start of the game, players are given about 300 seconds of available time. At the start of each turn, about 45 more seconds are added. Which of these two systems is used will be decided randomly for each game. Since this is an experimental feature, we plan to make the final decision based on feedback about which system players prefer. This feature is also planned to be released soon. {STEAM_CLAN_IMAGE}/46046997/9e93eb62e4b5f612d55f77a1dbac63343ba0694c.png New Class: Hunter We are currently working on implementing a new class: “Hunter.” Hunter is a class that can trigger an event called “Treasure Hunt.” As rewards, players can obtain things such as a specified Legendary card, cards that permanently increase a unit’s Attack and Health, and an extremely powerful unit. In addition, Hunter will also come with new systems, such as free shop rerolls and effects that activate when attacking. These features are planned to arrive from next month onward. {STEAM_CLAN_IMAGE}/46046997/666bc7120ac9eca746a09e9c131d726a4b80162b.pngRead full article on Community Announcements (Darjeeling)Patch NotesOfficial
Caldra: 0.0.4 Update
Patch Notes When the flowers of Dragon Amber bloom and the white rabbits begin changing into their summer attire, how are all you Owners doing? This is Caldra’s first balance adjustment since the service began. Thank you so much for playing! In this update, we have slightly weakened cards that were too strong based on current battle records, while giving a reasonable boost to weaker cards and cards that were rarely being used. Now then, let’s get excited and dive into Caldra’s very first balance adjustment! Balance Adjustments * Under Cover of Night: Added the effect “Draw 1 card after using this card.” * Cunning Exchange: Added the effect “Draw 1 card after using this card.” * Dark Merchant: 2/6 => 4/3 * Nightmare: 4/1 => 5/1 * Ember Arcanist: 2/5 => 2/4 * Young Head of Coutevert: 3/7 => 3/6 * Oathwell: 1/4 => 1/3 * Rehire Contract: SuperRare => Rare * Grand Starweaving Magic: Changed so that damage dealt to the enemy Owner no longer diminishes. Bug Fixes * Fixed an issue where cards in the hand or on the battlefield could rarely become unresponsive.Read full article on Community Announcements (Darjeeling)Patch NotesOfficial
Caldra: 0.0.3 Update
Patch Node Bug Fixes - Fixed an issue where localization could sometimes behave incorrectly.Read full article on Community Announcements (Darjeeling)Patch NotesOfficial
Caldra: 0.0.2 Update
Patch NotesImprovementsChanged the maximum turn time for each player: 75 seconds => 90 secondsBug FixesFixed an issue where card positions were misaligned in the modal displayed after a battle endsFixed an issue where the tutorial could become impossible to progressFixed an issue where the effect of “Knight Council Spokesperson” was not applied correctlyRead full article on Community Announcements (Darjeeling)
