Card Stack Challenge

Cards from our database of 6,200+ real sports cards stream by one at a time. Each shows the player, set, year, and estimated raw value. You have 30 seconds to build a 5-card stack that totals as close to $500 as possible. Tap "Add to Stack" to keep a card or "Skip" to pass. The game ends when you have 5 cards, run out of time, or run out of cards.

Your score starts at 1,000 and decreases based on how far your stack total is from the $500 target. Hitting exactly $500 earns 1,000 points. You get a 200-point bonus for filling all 5 slots. The maximum possible score is 1,200 (perfect $500 with a full stack). Grades range from S (perfect) to D (keep practicing).

Yes — every card and price comes from CardVault's database of real sports cards with estimated market values based on recent sold data. The challenge uses cards valued between $10 and $300 raw for interesting gameplay. This is a great way to test and improve your knowledge of card values across baseball, basketball, football, and hockey.

Yes — the card sequence is seeded by today's date, so everyone who plays today sees the same cards in the same order. This makes it fair for comparing scores and sharing results. Tomorrow brings a new set of cards. Your high score persists across sessions.

Keep a running mental total and know how much room you have left. Early picks are flexible — take cards in the $80-$120 range. As you get closer to 5 cards, you need to be more precise. The "preview" text under each card shows what your total would be if you add it. Skip expensive cards early unless they perfectly fit your target. Leave room for adjustment on the last 1-2 picks.