Buy Project Solaris CD Key for PC

  • PC
Project Solaris cover

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Project Solaris is a story-driven roguelite RPG where you guide Solaris, a struggling mage, through a transformative 100-day journey toward becoming a true sorcerer. Accompanied by her loyal familiar Homu, Solaris must navigate trials on her island home while gradually uncovering a deeper narrative through an achievement-based progression system. Each playthrough reveals new story threads and character sub-stories, with multiple endings determined by your choices and playstyle.
The core gameplay loop revolves around strategic daily decision-making. Each day, you select three activities from five options: Combat, Social interaction, Shopkeeping, Development, or Rest. These choices directly influence character relationships, story progression, and your combat readiness. The map evolves every 20 in-game days, introducing elite battles on Day 10 and culminating in the "Trial Ceremony"—a boss battle that tests your preparation and strategy.
Combat emphasizes synergy between Solaris and Homu. You control Solaris while commanding Homu through quick-time events (QTEs) that determine skill execution success. As your bond deepens, difficult QTEs become easier to activate. Homu learns skills from randomized options each run, encouraging fresh tactical builds. Solaris crafts weapons to complement Homu's abilities, with buffs and debuffs creating dynamic combat scenarios. Resource management is critical: earn money through battles or shopkeeping work to purchase expensive Solaris equipment or craft cheaper, randomized gear for Homu.
What sets Project Solaris apart is its narrative-forward approach to the roguelite genre. Rather than treating story as secondary, the game weaves character development and plot revelation into the roguelite structure itself. Your repeated playthroughs gradually expose the full picture behind Solaris's journey, with different story paths emerging based on your decisions. The pixel art aesthetic combines with charming character interactions to create an engaging, character-driven experience that rewards both strategic mastery and narrative curiosity.

Additional options to buy this game on Steam

If you prefer to buy this game on PC without linking a bank card, you can use a Steam Gift Card, a prepaid card that allows you to add balance to your account and purchase games directly on the Steam store.

In practice, a €50 Steam Gift Card is usually enough to buy most Steam games currently available and is redeemed using a digital code. It works with all PC games available on Steam and is a common alternative for buying games without entering payment details.

Most common FAQs when buying Project Solaris for PC in digital format:

  • What is the key for Project Solaris on PC?

    It is a key that will allow you to download the game Project Solaris on your PC from official download platforms.


  • What's the best price for buying the key of Project Solaris for PC?

    As of 01/07/2026, in United States, the best price we have found in our selection of online stores that include the key for Project Solaris on PC is €0.00.


  • Why is the Steam Key of Project Solaris safer than the account format? See more

    The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Project Solaris to your game library. The account format requires more complicated steps and is more prone to errors during activation.


  • What issues can arise when activating a Steam Key of Project Solaris? See more

    The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought Project Solaris, and they will provide a new key. You can also contact us, and we’ll help you out.


  • How long will I have to wait to receive the Steam Key of Project Solaris after purchasing it from a store? See more

    Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

    Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

    If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.


  • What guarantee do I have that the listed stores are reliable? See more

    At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

    There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

    In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.


Need more help? Use our FAQs.

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