Card Grading Game

Each round presents a card with detailed condition descriptions for centering, corners, edges, and surface — the same four criteria professional grading companies evaluate. You read the clues and select a PSA grade from 1-10. The closer your guess is to the actual grade, the more points you earn. A perfect match scores 100 points, while being off by 1 grade scores 70. Play 10 rounds per game and track your accuracy over time.

PSA uses a 1-10 numerical scale: 1 (Poor), 2 (Good), 3 (Very Good), 4 (VG-EX), 5 (Excellent), 6 (EX-MT), 7 (Near Mint), 8 (NM-MT), 9 (Mint), and 10 (Gem Mint). Higher grades mean better condition, with 10 being virtually perfect. The most common grades for modern cards submitted to PSA are 8-10, while vintage cards often grade 3-7 due to age-related wear.

Yes! This game teaches you to recognize how specific condition issues correspond to PSA grades. After each round, you see the correct grade with an explanation of why that grade was assigned. Over time, you'll develop an eye for the differences between a PSA 7 and PSA 8, or why certain flaws drop a card from a 9 to a 7. Real grading also considers eye appeal and overall impression, which this game simulates through the descriptions.

The Daily Challenge uses the same set of 10 cards for all players on a given day (seeded by the date). This lets you compare your score with friends or other collectors who played the same day. Your daily challenge history is saved locally, including your best score and longest streak of days played.

Scoring is based on accuracy: a perfect grade match earns 100 points, being off by 1 earns 70 points, off by 2 earns 40 points, off by 3 earns 20 points, and off by 4 or more earns 0 points. Your total score out of 1,000 (10 rounds × 100 max) determines your letter grade: S (950+), A (800+), B (600+), C (400+), D (200+), F (below 200). The game also tracks your average accuracy percentage across all games played.