Starring up your units is how you farm faster and clear harder stages. This guide breaks down what stars actually do, how to raise them, and the honest star-versus-evolve decision every player has to make.
A unit's star level decides a big part of its stats, which decides how fast you clear waves. Star your main units early and keep them ahead of your stage.
The official description lists starring and upgrading units as a foundation the whole loop stands on. When your carry's star level is behind your stage, every farm you run is slower than it should be — more time per clear, fewer gems and gold per hour, and a stall that echoes through everything else.
Your star level raises a unit's base damage; the unit's kit multiplies how you apply it. Both matter for gems/gold per hour.
A strong unit from the tier list with a high star level crushes stages that a strong unit at low stars can't touch. Stars are the raw number; the unit is the multiplier. Raising both — unit quality first, then its stars — is the fastest route to clearing speed.
Compare unitsThe four things to understand before you pour resources into any unit's stars.
Each star level lifts the unit's base stats — the damage and survivability every clear depends on. Higher stars let the same unit push into harder stages without you swapping your lineup, which means your farming formula stays stable while your output climbs.
The story stage your team can clear efficiently is capped by how strong your carries are. Raising stars on your main units raises that cap, which directly raises the gold and gems you earn per hour from the best gem method.
Don't spread stars across the bench. Concentrate on one or two carries and keep their stars ahead of your current stage. A focused starred carry out-cleans a balanced lineup of understarred units every time — and its clear speed funds the next upgrade.
If you're chasing stars through drops rather than direct upgrade, know that exact star-drop odds are community-reported and unconfirmed — they aren't on any official table. Budget around the guarantee of starring your carry methodically, not the hope of a lucky drop spike.
This is the fork every midgame player hits — and the right answer depends on whether your current form still carries you.
As long as your carry's current star form clears your target stage without a struggle, the efficient move is to keep starring it. Stars are the lower-risk, compounding upgrade — they raise what already works and cost you nothing in the reset that evolution can bring.
The moment a carry stops keeping up with your stage, starring it alone may stop paying off. That's the signal to consider evolving it into a stronger form with gems and materials. Starring and evolving work together across the lifecycle: star while it carries, evolve when it doesn't, then star the new form.
Your carry clears the current stage efficiently and you want to raise its output cheaply and safely.
The current star form stalls a stage you need, and you have the gems and materials for the stronger form.
Star the form that works, evolve when it stops, then repeat starring on the stronger form.
Star levels clearly matter — creator guides list starring/upgrading units as a core progression system, so we treat the mechanic itself as confirmed. What we cannot confirm is any exact stat gain per star or any precise star-drop percentage: those figures are community-reported and drift with patches, and no official table exists. When you see a specific number on a forum, treat it as unverified until it lines up across several current reports. The safe strategy never depends on a lucky star drop — it depends on starring your carry methodically and evolving at the right stall point.
Star levels feed the gem and gold loop.
