Shards of Infinity and the Deck Builder That Lets You Become Immortal

Shards of Infinity At A Glance

I have played Shards of Infinity forty-three times. Solo. Not a couple of quick plays to get the feel for it, but forty-three proper sessions where I tracked every decision, every mastery milestone, every moment where I had to choose between immediate damage and long-term power scaling. I have reached the Infinity Shard seven times. I have lost at mastery 29 more times than I care to count. I maintain spreadsheets documenting which opening purchases lead to the fastest mastery scaling and which automa difficulty levels create the most interesting tactical puzzles.

What fascinates me about this design is how it solves the fundamental tension in deckbuilding games between immediate payoff and engine construction. Most deckbuilders force you to choose between buying something useful now or something that might be useful later. Shards of Infinity creates a third option that transforms the entire framework. You can become immortal. Not metaphorically, not through some abstract victory condition, but through a mechanical transformation that changes how every card in your deck functions.

The mastery system is what elevates this from competent deckbuilder to genuinely innovative design. Every gem you spend on mastery instead of new cards is an investment in fundamentally altering your deck’s potential. At mastery 30, you unlock immortal effects on every card you own. Suddenly that basic Crystal you have been cycling through your deck for thirty turns becomes a permanent fixture generating resources every round. That Champion you purchased early becomes an unstoppable force that grows stronger with every activation.

What Shards of Infinity Really Is

At its core, Shards of Infinity is a deckbuilding game about permanent transformation. You begin each game with a basic starting deck and 50 health (Rulebook PDF), facing an automa that starts with identical resources but follows scripted behaviour patterns. The win condition is straightforward: reduce your opponent to 0 health (UltraBoardGames).

What makes it distinctive is the mastery track. You start at 0 mastery and can increase it by spending 1 gem per point (Rulebook PDF). This creates immediate tension. Every gem spent on mastery is a gem not spent on new cards, not spent on direct damage, not spent on immediate board presence. Early game, mastery feels like a luxury you cannot afford.

The transformation happens gradually, then suddenly. At mastery 10, some cards unlock bonus effects. At mastery 20, more powerful abilities activate. At mastery 30, you reach the Infinity Shard and unlock immortal effects (UltraBoardGames). This is not just a victory condition or a late game power spike. This is a fundamental shift in how your deck operates.

Stone Blade describes mastery as a core twist on the deckbuilder formula (Stone Blade Entertainment), and that description understates the mechanical elegance. Most deckbuilders focus on deck composition and card synergies. Shards of Infinity adds a third dimension where your existing cards evolve based on your mastery investment. A card you purchased on turn three can become exponentially more powerful on turn fifteen without you ever seeing it again in the market.

The Mastery Investment Dilemma

The mastery system creates genuinely difficult resource allocation decisions throughout the entire game. In most deckbuilders, you face obvious trade-offs between expensive powerful cards and cheaper utility cards. Shards of Infinity asks a more complex question: do you want this card to be useful now, or do you want every card you own to be transformatively powerful later?

Early game mastery investment feels wasteful. You are spending gems that could buy immediate damage dealing cards or useful utility champions. The automa is pressuring your health total and building board presence while you are investing in an abstract number that provides no immediate benefit. Every point of mastery below 10 is pure faith that the long-term payoff justifies the short-term sacrifice.

I have played games where I ignored mastery entirely for the first eight turns, focusing exclusively on damage dealing champions and direct attack cards. These games often end quickly, either in decisive victories when I can establish early board control, or devastating defeats when the automa outpaces my damage output. The immediate power approach works, but it caps your potential.

Conversely, I have played games where I invested heavily in mastery from turn one, spending almost every gem on mastery increases rather than new cards. These games feel precarious for the entire first half. My deck remains anaemic, my damage output struggles to keep pace with the automa’s health recovery, and I am constantly behind on board presence. The tension builds until I hit those critical mastery thresholds where my existing cards transform.

The sweet spot requires careful calculation. You need enough new cards to maintain reasonable damage output and board control, but you also need consistent mastery investment to reach those transformation points before the game ends. I have found that games where I alternate between mastery investment and card purchases tend to create the most interesting decision trees, where every turn presents meaningful choices about immediate versus long-term power scaling.

Immortal Card Transformations

Reaching mastery 30 unlocks immortal effects on every card in your deck, but the transformation is not uniform. Each card type responds differently to immortality, creating layers of strategic consideration about which cards to prioritise earlier in the game based on their immortal potential.

Crystal cards, the basic resource generators, become permanent fixtures in your tableau when immortal. Instead of cycling through your deck once per turn, they generate resources continuously. This fundamentally changes deck velocity calculations. With immortal Crystals, you no longer need to worry about drawing enough resource generation cards each turn. Your resource base becomes stable and predictable.

Champion cards gain persistent abilities that activate every turn rather than only when drawn and played. A Champion that deals 3 damage when played becomes a Champion that deals 3 damage every single turn once immortal. This creates exponential scaling. Champions you purchased early in the game for their immediate utility suddenly become ongoing threats that compound turn after turn.

Construct cards, which provide ongoing effects while in play, become indestructible when immortal. Normal constructs can be destroyed by certain attacks or card effects. Immortal constructs become permanent tableau features that cannot be removed. This creates sanctuary effects where portions of your engine become completely protected from disruption.

The progression toward immortality changes how you evaluate every card purchase. A Champion that seems marginally useful on turn five becomes extraordinarily powerful when you realise it will activate automatically every turn for the remainder of the game once you reach mastery 30. A seemingly weak Construct becomes essential when you understand it will provide protected ongoing benefits that cannot be countered or removed.

I have completed games where reaching immortality transformed a barely functioning deck into an overwhelming powerhouse within three turns. Cards that were struggling to provide adequate value suddenly became engine components generating massive resource and damage advantages every single turn.

Automa Design and Solo Scaling

The solo automa in Shards of Infinity deserves particular attention because it avoids the common trap of simply scaling numbers upward to create difficulty. Instead, the automa follows behavioural patterns that create different types of strategic pressure at different difficulty levels.

At the easiest difficulty settings, the automa focuses primarily on direct damage and straightforward card purchases. It pressures your health total consistently but predictably. You can plan around its behaviour patterns and develop strategies that account for its likely moves. This creates space for learning the mastery system without overwhelming tactical complexity.

Higher difficulty levels introduce more sophisticated automa behaviours. The automa begins prioritising its own mastery development, creating parallel scaling pressure. While you are investing in long-term power scaling, so is the automa. The race to transformative power becomes mutual rather than one-sided. The automa also begins targeting your constructs and champions more aggressively, forcing defensive considerations into your tactical planning.

The highest difficulty automa incorporates adaptive behaviours based on your mastery level. If you are ahead in mastery development, it prioritises immediate damage to pressure you into reactive play. If you are behind in mastery, it continues investing in long-term scaling to maintain its advantage. This creates dynamic pressure that responds to your strategic choices rather than following scripted patterns.

What impresses me most about the automa design is how it creates the sensation of playing against an opponent with a coherent strategy rather than a random event generator. The automa makes decisions that feel purposeful within the context of its current board state and apparent objectives. When it chooses immediate damage over mastery investment, or mastery investment over new card purchases, those choices feel tactically reasonable rather than arbitrary.

Campaign Structure and Progression

While Shards of Infinity can be played as standalone sessions, it truly shines in campaign mode where individual games connect into larger narratives of progression and consequence. Campaign play introduces persistent elements that carry between sessions, creating longer strategic arcs that span multiple games rather than resetting completely each time.

Between campaign sessions, you can upgrade your starting deck with cards earned from previous victories. These upgrades compound over time, allowing you to begin later campaign games with more sophisticated starting positions. A successful early campaign might unlock a powerful Champion that becomes part of your standard opening, or a useful Construct that provides early game stability in subsequent sessions.

The campaign structure also introduces escalating challenges where later scenarios present more difficult automa opponents with enhanced starting positions or special abilities. You are not just replaying the same challenge with minor variations. Each campaign scenario presents unique tactical puzzles that require different strategic approaches and deck construction priorities.

Resource management becomes more complex in campaign mode because you must balance immediate victory conditions against long-term campaign progress. Sometimes the optimal decision within a single session conflicts with the optimal decision for overall campaign advancement. Do you spend resources on guaranteed immediate benefits, or do you invest in upgrades that will provide advantages in later campaign scenarios?

I have played through the full campaign twice, and each playthrough felt distinctively different based on early strategic choices and upgrade priorities. The first campaign focused heavily on direct damage strategies with Champions that scaled well into late game scenarios. The second campaign emphasised Construct-based engine building with resource generation focus. Both approaches were viable, but they created entirely different tactical experiences across the campaign structure.

The persistence elements create genuine attachment to your deck development over time. Cards that you struggled to make work in early campaign sessions become reliable workhorses in later scenarios. Strategic investments that felt questionable in isolation prove their value across multiple connected sessions.

Is Shards of Infinity Still Relevant Today?

Shards of Infinity released in 2018 (BoardGameGeek), which places it in an interesting position within the deckbuilding genre’s evolution. It arrived after the initial deckbuilding boom but before the recent surge of hybrid designs that incorporate deckbuilding as one element among many. The question is whether its core innovations hold up against more recent designs.

The mastery system remains genuinely unique. While other deckbuilders have experimented with persistent upgrades and evolving cards, none have implemented the type of wholesale deck transformation that immortality provides. The mechanical elegance of spending immediate resources for fundamental long-term changes creates decision tensions that feel fresh even after dozens of plays.

Component quality is solid without being exceptional. The cards are functional and clearly designed, with iconography that communicates game states effectively. Setup time is minimal, which matters significantly for solo play where you want to focus on gameplay rather than preparation. The 30-minute play time (BoardGameGeek) feels accurate for experienced players, though early learning games take longer.

Rules complexity sits in a comfortable middle ground. The base deckbuilding mechanisms will be familiar to anyone who has played Dominion or Ascension, but the mastery system adds sufficient depth to create new strategic considerations. Teaching time is reasonable, though the mastery system requires explanation and examples to understand properly.

My primary criticism involves information management during complex board states. When you have multiple Champions with triggered abilities, several Constructs providing ongoing effects, and high mastery levels unlocking additional card interactions, tracking all the moving parts becomes demanding. The game provides adequate player aids, but optimal play requires careful attention to multiple simultaneous effects.

The solo experience specifically deserves praise for avoiding common pitfalls. The automa never feels like a random obstacle generator. Its behaviour patterns create tactical puzzles that require strategic responses rather than pure optimisation exercises. Multiple difficulty levels provide appropriate scaling for different skill levels and strategic preferences.

Why You Should Play This Game Solo

If you enjoy resource management puzzles that evolve throughout the game — Shards of Infinity provides exactly that type of shifting optimisation challenge where early decisions fundamentally alter late game possibilities.

If you want a deckbuilding experience that goes beyond simple card synergies — the mastery system creates genuinely transformative deck evolution that makes cards function completely differently based on your investment decisions.

If you prefer solo games that create different experiences through systematic variation rather than random chaos — the automa difficulty scaling and campaign structure provide controlled complexity increases that create new challenges without eliminating strategic planning.

If you enjoy games where long-term strategic thinking pays off in concrete mechanical advantages — reaching immortality feels genuinely rewarding because it transforms your entire deck rather than just providing incremental benefits.

If you want something that plays quickly enough for regular solo sessions but provides sufficient depth for extended engagement — the 30-minute sessions make it accessible for frequent play while the mastery system creates enough strategic variety to sustain interest across many games.

If you are looking for a deckbuilding game that creates escalating power fantasies without breaking fundamental game balance — becoming immortal feels genuinely powerful without making the game trivial or predetermined.

If you appreciate campaign structures that create persistence without overwhelming complexity — the upgrade system provides meaningful progression between sessions without requiring extensive campaign management or story tracking.

Verdict

Shards of Infinity earns an 8/10 rating through systematic execution of genuinely innovative mechanics. After forty-three plays, I am still discovering optimisation strategies and testing different approaches to mastery scaling. The immortality system remains mechanically fascinating because it creates wholesale transformation rather than incremental improvement.

The game succeeds where many deckbuilders fail by making late game states feel fundamentally different from early game states. Reaching mastery 30 is not just a numbers increase or a new victory condition. It is a transformation that changes how every card in your deck operates. That transformation justifies the strategic investment required to achieve it.

Stone Blade Entertainment describes this as a fast paced deckbuilding game (Stone Blade Entertainment), and while the pacing is indeed efficient, the description understates the strategic depth. This is a game about permanent change, about investing in transformation, about the mathematical and emotional satisfaction of watching your deck evolve from functional to transcendent.

I am actively working to achieve immortality at the highest automa difficulty levels. The challenge remains engaging because optimal play requires balancing immediate tactical necessities against long-term strategic transformation. Every session presents meaningful decisions about resource allocation, risk management, and investment timing.

Shards of Infinity demonstrates that deckbuilding still has room for fundamental innovation rather than just thematic variation. The mastery system proves that persistent character development can integrate seamlessly with traditional deckbuilding mechanisms without overwhelming the core decision structures that make the genre compelling.

See our breakdown of the best solo deckbuilding games

Nicholas

Nicholas teaches secondary school history by day and campaigns through fantasy worlds by night. He writes about legacy and campaign games—the epic, months-long sagas that build friendships, stories, and the occasional scheduling nightmare.