Card Collectors

Card Collectors (officially "Grow a Collection") is a card-collecting simulation game on Roblox developed by the Grow a Collection group. Launched July 2025, it has grown to over 7.2 million visits with 25.3K favorites and a 95.9% approval rating from 35K votes. Servers hold 5 players per session. Active development has continued through April 2026, with a major update renaming the game to Card Collectors.

The core loop channels the excitement of real-world trading card collecting - opening packs, chasing rare pulls, and building a display - into an idle format:

• 💎 Booster packs - purchased from the shop with Cash; reveal cards from a rarity pool spanning Common, Uncommon, Rare, Legendary, Holo Alt, Shiny Alt, and Gold Alt
• 💎 Display stands - place collected cards on stands in your plot; each card generates Cash passively over time
• 🎭 Trading - a dedicated Trading place supports player-to-player card exchanges for building specific collections
• 💰 Cash economy - earned from selling cards, passive stand generation, and code rewards; spent on more booster packs
• 🏠 Automation - gamepasses for Auto Open, Auto Sell, and Auto Collect reduce manual clicking; the Open X3 pass triples pack openings per click
• ⏳ Milestones - badge system tracks rarity achievements from first Common through Gold Alt

The Alt variants (Holo Alt, Shiny Alt, Gold Alt) are the ultra-rare chase pulls above the Legendary tier. Cash from selling cards and displaying them accumulates even while offline, rewarding players who return consistently to reinvest earnings.

Card Collectors has an unusually high code velocity for its visit count - 22 codes in roughly 9 months of operation, including community, event, and milestone codes. Players who enjoy idle collecting may also like Grow a Garden for a related idler format.