Idle Heroes Merry Carnival F2P Guide: Spray Paint & Stellar Cans

To get the most out of the Idle Heroes Merry Carnival event as a free-to-play (F2P) player, collect every free source of Spray Paint, buy only the exact gem packages needed to reach your next milestone, and funnel limited Stellar Cans directly into your main carry hero.

How the Merry Carnival Event Currencies Work

The Merry Carnival event centers on two specific currencies to drive account progression:

• Spray Paint: The primary token used on the event board to uncover tiles, complete columns, and trigger cumulative milestone rewards.
• Limited Stellar Can: A high-value resource bundle containing Stellar Shards, used to fuel Void Imprints and Tree of Origin upgrades.

Because progress relies on token accumulation rather than high-volume Heroic Summon marathons, non-spending players can secure premium rewards by budgeting gems and completing standard daily requirements.

Spray Paint Sources and F2P Acquisition Strategy

Collect all free event tokens before committing gems. This prevents overspending on token packs when daily quest gains would have bridged the gap naturally.

Before buying gem packs, calculate your total Spray Paint from logins and quests. Purchase only enough gem packages to hit your target milestone threshold. If your gem reserves cannot reach the next major chest tier, do not purchase partial packages.

Using Limited Stellar Cans Efficiently

Stellar Shards represent a major bottleneck for F2P accounts trying to push Void Campaign, Void Vortex, and Realm's Gate. The limited Stellar Can provides an immediate infusion of these shards.

• Focus on your primary damage carry: Invest Stellar Shard yields into pushing a single carry hero to Void Imprint V4 or advancing their Tree of Origin levels. Spreading shards evenly across support units dilutes combat power.
• Avoid low-tier trade-offs: Never exchange event tokens for common materials like gold or spirit until all accessible Stellar Can allotments have been claimed.

Reward Chest Priority Ranking

When earning chest selections through cumulative Spray Paint milestones, prioritize materials that modify hero skill mechanics over standard stat boosts:

1. Sublimation Selection Chests: Priority target. Sublimations upgrade active and passive skills, providing the largest mechanical improvements to late-game hero kits.
2. Core of Origin Shards: Second priority. These shards are required to unlock Transcendence active skills and are difficult for F2P accounts to obtain outside major events.
3. Limited Stellar Can Allocations: Essential progression fuel to elevate hero base stats and satisfy Void Imprint prerequisites.
4. Mysterious Artifact Selection Chests: Situational. Pick artifacts only if your roster lacks fundamental utility pieces, such as Melodic Strings for your damage carry or base Demon Bells for energy engines.

Avoid cosmetic skins and basic resource crates until all available skill enhancement chests and Stellar Cans have been exhausted.

When to Stop Spending

Carnival events reward hitting specific thresholds rather than spending continuously.

1. Calculate your guaranteed Spray Paint total across the remaining event days.
2. Determine if your gem stockpile can bridge the distance to the next Sublimation or Core milestone.
3. If reaching the next tier requires spending emergency gems reserved for upcoming seasonal events, stop at your current completed milestone.
4. Cash in all banked Spray Paint and Stellar Cans before the event timer expires, and save remaining gem reserves for future events.