Where It All Started

The Spark

Ultimate Card Collector started from a very specific itch: I wanted to build a game around the Steam Community Market — the trading-card economy Steam runs on your library, where you collect cards from the games you play and fuse a full set into a badge. I loved that loop and kept thinking about how it could work as an actual game, not just a byproduct of owning games on a platform.

Scoping Down to Learn

Rather than trying to bolt that mechanic onto something as ambitious as a Steam-like platform, I decided to build it as its own self-contained mobile game.

I do have a few other game ideas sitting in the back of my mind, but they're in completely different genres. This one was simply my first real step toward making games instead of just thinking about them, and a good excuse to stress-test a set-collection-and-fusion system somewhere small and shippable.

The Core Loop

The entire loop boils down to three verbs: open boosters → complete sets → fuse sets.

Fusing a completed set doesn't just look nice — it makes future boosters better, and the reward scales with the quality of the set you fuse:

• Normal Fusion — improves shiny (Silver/Gold/Holo) drop rates
• ✦ Silver Fusion — increases higher-rarity drop rates
• ★ Gold Fusion — +25 bonus credits every day
• ◈ Holographic Fusion — a free daily pack

Everything loops back into opening more boosters — the self-reinforcing collection loop I actually wanted to explore in the first place.

Keeping the Lights On

For the game to be at least sustainable, I added rewarded ads and in-app purchases on top of that loop. Neither is mandatory — you can play and progress without spending a cent — but they let players open more packs if they want to move faster.

I'm not counting on this to make real money. Realistically, a single "remove ads" purchase a month is enough to cover the server bill, and that was the actual bar I set for myself.

Giving Players Reasons to Come Back

Once the core loop worked, I layered on systems whose only job is to add interaction — with the game, and with other players:

• A player-to-player marketplace (fixed-price listings and buy offers)
• Daily and weekly quests
• Achievements and player titles
• An in-game chat (with preset messages, otherwise I'll have to add active moderation, maybe one day)
• Direct trades between players

None of these are the "point" of the game on their own — they exist to give the collection loop more reasons to open one more booster, and more reasons to bump into other collectors while doing it.

Why This Game, Why Now

It's a pretty niche game — collectible card games about opening packs and fusing sets aren't for everyone — but it checks every box of what I personally enjoy in a game like this, which felt like the right first thing to build and actually finish.

What's Next

I'll use this devlog to talk about what comes next: new card universes (a few more are already written and waiting on art), systems I'm iterating on, and whatever I learn from having real players in the wild.