Private Art: Collections — Game Mechanics
A mobile-first Telegram Mini App where players curate a gallery of legendary paintings, build their reputation as a collector, and mint dynamic NFTs on the TON blockchain.

Core Loop
Buy → Exhibit → Earn → Upgrade → Repeat
Buy paintings — pick a random artwork from the global catalog. Prices scale with your collection size.
Exhibit them — display a painting in your gallery for a set window of time to earn coins and XP.
Earn passively — coins drip into your balance in real-time while a painting is on display.
Upgrade & expand — invest coins into permanent upgrades that boost your output.
Mint as NFT — turn your favorite paintings into permanent on-chain collectibles on TON.

⏱ Exhibition System
When a painting goes on display, it earns coins and XP for a fixed duration:
duration = 120 min + (exhibit_duration_lvl × 10 min)
Base: 2 hours.
Max upgraded: ~18.7 hours at level 100.
Coin formula
reward = rating × minutes × 0.06
× (durability / 100)
× (1 + exhibit_income_lvl × 0.01)
× rarity_bonus

Example. A rating=25 rare painting on a 2h exhibit at 90% durability with exhibit_income=lvl 10: 25 × 120 × 0.06 × 0.9 × 1.10 × 1.10 ≈ *196 coins*.

XP formula
xp = randint(minutes/30 × 1.5, minutes/30 × 2.5)
× (1 + influence_income_lvl × 0.01)
For a 2h exhibit: 6–10 XP baseline (~3–4 XP/hour).
XP grows the painting's influence level, which raises its rating and eventually upgrades its rarity tier (Common → Uncommon → Rare → Legendary → Masterpiece). More rating = more coins per exhibit.

🛠 Durability & Repair
Every painting has a condition bar (0–100%).
Idle decay: 5%/day, modulated by a per-card variance factor in [0.75, 1.25] so no two paintings age identically.
Exhibit decay: an additional 1%/hour while on display.
Repair cost: scales with rating × level, reduced by repair_discount upgrade.
Slow decay: durability_slow upgrade cuts the rate by 1% per level.
At 0% the painting is destroyed — unless it's a TON-minted NFT, which floors at 1% and remains forever.

🔍 Discover Channel
Every 2-hour cycle, players unlock 5 Discover cards — paintings highlighted from the official channel. Each visit + claim awards +50 coins, scaled by the discover_reward upgrade.
Quiz Bonus (×3 multiplier)
Each Discover card prompts a 3-option question — guess the painting's year or its artist:
✅ Correct answer → ×3 reward (e.g. 150 coins instead of 50).
❌ Wrong answer → standard reward (no penalty).
The correct option is validated server-side — no way to peek at the answer client-side.

🏆 Influence System
Each painting accumulates influence XP from exhibitions. XP unlocks levels via a quadratic curve:
xp_required_for_level(L) = sum of (2k + k²) for k = 1..L
Higher level → higher rating → higher rarity tier → higher exhibit income → tighter loop.

🛡 Anti-Cheat
All game-state mutations are server-validated. Coin balance, XP, durability, quiz answers — the client never decides what it earns.
Drip-credited income keeps the visible "live balance" in lock-step with the authoritative server number; players can spend exactly what they see.
NFT mints are reconciled with on-chain ownership every cycle.

New Update: Sell your TON paintings at auction!

The auction now welcomes lots from players. You can list any TON painting you own and let other collectors bid ⭐️ on it!

What you can sell
Any TON painting of Rare quality or higher (Rare, Legendary, Masterpiece).

How it works
1. Pick a painting → tap Sell
2. Set your starting price in ⭐ (minimum price is Painting Value)
3. Choose duration
4. Sign the TON transfer to escrow(you don't need TON at your wallet - once you covered listing fee we will send you TON to your connected wallet to cover the fee
5. Wait for buyers — Stars and your TON Artwork are held securely

TON gas fee is on us!
You don't need any TON on your wallet. The platform tops it up automatically right after you pay the listing in Stars 🌟

Safe escrow
Your painting stays in the platform escrow during the auction. Unsold? Returns to you automatically. Sold? Goes to the buyer instantly.

Changed your mind?
You can withdraw a lot anytime:
• No bids yet — free
• Already bid on — 20% of current bid

All bidders get notified.

Bidding rules
• Bid step: +10%
• Buyout: ×3 of current bid
• Stars go to platform → we transfer them to you manually

If you have an issue, need help or refund - write it on comment secion or send DM to Private Art


Have fun!
@privateart_bot

Hey everyone,
As Private Art: Collections grows, there is need to make some changes to ensure the project can continue to scale and expand safely.
One of those changes is moving away from using original paintings as in-game content. Even though I deliberately chose works that are in the public domain, modern platform policies and legal requirements often expect developers to have clear rights to all content used in their products. In practice, this means that even if Caravaggio himself isn't going to send us a copyright strike, there are still compliance and platform-related issues that need to be addressed.
Over time, I'll be taking the necessary steps to transition the game in a way that supports its long-term future while preserving the spirit that made it special in the first place.
I know many of you joined because of your love for great art, and I hope you'll enjoy the direction we're taking next.
Thank you for being part of this journey

🎨 Update Notes

Random Painting
Better chances to get new painting with high level
Removed the visible top-card swap on the tutorial Discover step. Your painting now appears in the right spot from the very first frame.
• Tuned the roulette strip: fewer redraws per second, cleaner motion during the slow scroll, and a more pronounced glow on the winning tile.
• Fixed a tiny image flicker that sometimes happened the moment the roulette stopped.

Hey everyone! 👋
Good to see you all!
Collections main update
You can now group the paintings you own. Collection makes your paintings earn more coins and influence.
How the bonuses work:
Same Artist - from 2 paintings by the same artist
Same Year - from 3 paintings from the same year
Same Rarity - from 5 paintings of the same rarity
Key rules:
The bonus boosts both coins and influence you earn from exhibiting
It only applies to the paintings that actually form the matching set - random filler paintings in the same collection get no bonuses
Every added matching painting makes the bonus stronger
A painting can only belong to one collection
Bonus size scales with rarity: masterpieces give the biggest boost, and it gradually decreases down to common


Economy tuning
A few adjustments to make Discover actually worth playing: answering the quiz question correctly now pays a x5 multiplier, and the daily all-tasks bonus, referral rewards and collection achievements all pay significantly more.

Original art is back
All the original artwork from the channel has been restored. Almost all 😉
More to come. Thanks for playing!