The on-chain collectible card game (TCG) market on Solana is led by platforms like Collector Crypt and Phygitals, with trading volumes surpassing NFTs, peaking at $44.7 million per week in September, and leading NFTs last week with a transaction volume of $3.1 million compared to $888,921 for NFTs, maintaining a 247% lead. Collector Crypt dominates in revenue and high-value spending, while Phygitals leads in user engagement, although recent growth has slowed, with Gacha game spending down 93% from its peak. The industry faces a sustainability challenge as it relies on whale users and must innovate to maintain user interest after the initial hype.