Free route logic
Without exact public cost tables, the safest advice is to spend around the slowest part of your current loop.
- Empty board: improve spawn rhythm.
- Full board: merge and clear space.
- Raid losses: protect before attacking.
Upgrade the bottleneck you can feel: spawn speed if the board is empty, auto merge if manual combining slows you, lock cooldown if raids punish you, and health if nukes are getting deleted.
Without exact public cost tables, the safest advice is to spend around the slowest part of your current loop.
The official game pass API confirms several upgrade directions. Those names show what the developer treats as valuable mechanics.
Do not buy or upgrade around a problem you do not have. A player who idles mostly needs different help than a player who raids every minute.
There is no single public cost table, so choose the upgrade that fixes your current bottleneck.
Yes for players who dislike manual combining or leave the game running.
It is useful when your board waits on new nuke spawns.
Quick Lock Cooldown and x2 Nuke Health are the clearest defense-oriented pass signals.
Free players should build merge tempo and defense before taking risky raids.