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Single-player deck-building roguelite card game where cards are blank slates for you to build, upgrade and modify. Choose carefully when to play them and when / how to improve them. Have some fun and create game-breaking cards!... And most importantly, be able to put the box down and get out alive.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
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“That Time I Found A Box” is a roguelike deckbuilder where cards are blank slates for you to build, upgrade and modify as you like. Choose carefully when to play them and when / how to improve them.
Discover what’s possible with deep strategic card building and deck building resulting in vanishingly rare moments of there being only one obvious play available.
Choose your allies, have some fun and create game-breaking cards!... And most importantly, be able to put the box down and get out alive.
Innovative Card Effect System: Cards are like blank slates. Card Effects can be randomly or purposely added to Cards. Each time you play a Card, one Card Effect is sealed and will no longer trigger when played. Card effects can be unsealed by upgrading or combining Cards, or by using various unique Card Effects.
Every run is unique: On turn 1, choose from 3 random cards to define your early game strategy. Tier Up Bonuses (triggered by a card reaching tier 5 or 10) are randomised each run, allowing some surprising synergies to be readily available and exploitable for that run only!
Many ways to manipulate Cards: combine Cards in the Combiner, upgrade Cards in the Vault, place Cards at max tier in the Ascender to rebirth them, choose Unique Card Effects when a Card triggers a Tier Up Bonus by reaching tier 5 or 10, play Cards with powerful Card Effects that modify Cards in your Hand, and many more!
You control what's in your deck: Add or remove Cards from the Card Pool, from which a random card is added to your Deck each turn. Don't like a card or no longer need it? Place it in the Randomiser to change it to something more useful (hopefully). And many more ways to get cards with card effects that you want, and remove those that you don't.
Survive and thrive: strategically build your cards and deck to leverage powerful interactions while gaining favour to make allies and progress. Tactically balance being opportunistic with upgrades and keeping everyone happy. Falling behind may hinder progress and ultimately lead to your downfall!
Perks change up gameplay and unlock new strategies: Unlock perks during runs and assign them before starting a new run. Perks may give bonuses but may have downsides. But the downsides might turn into upsides depending on other Perks!
New Game+: If you need something more challenging, completing your first run will unlock Purgatory Levels, which have increased difficulty and may force some perks to be active. Subsequent Purgatory Levels are unlocked each time you beat a run on the highest unlocked Purgatory Level.
65 perks to change up gameplay between runs.
91 Card Effects to mix and match.
68 Tier Up Bonuses.
Play board with 7 different ways to play or manipulate cards (Play Spaces, the Vault, the Combiner, the Randomiser, the Duplicator, and Ascenders Persist and Split).
3 phases to complete a run (make an Ally, turn an Enemy into an Ally, defeat the last Enemy)
13 unique Purgatory Levels (new game+) for added challenge, where only game-breaking interactions will save you!
General decrease of difficulty.
Pressing spacebar now launches a firework. Do this to celebrate great plays. Pew pew!
Overhaul of some major systems, such as Purgatory Levels, corrupted Card Effects and upgrading of Cards.
Lots and lots of buffs!
and Bug fixes.
Lowest tracked price: €4.87 (Jul 7, 2026) · current best: €9.75.
88% positive reviews all-time · 0 peak players in the last 30 days.
Right now the cheapest offer for That Time I Found A Box is €9.75 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for That Time I Found A Box is €4.87 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
That Time I Found A Box peaked at 0 concurrent players on Steam in the last 30 days (highest on Jul 14, 2026). The player chart on this page updates daily.
Create a free price alert on this page and KingsPrice will email you when That Time I Found A Box drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
