Unlimited Hero Event: How to Upgrade Heroes Free (2026)

If there's one thing that stops people from upgrading Heroes, it's the downtime. Nobody wants to send their King off for a two-week nap right before a war weekend. That hesitation is exactly what the Unlimited Hero Event kills.

Here's the quick answer: while the event is live, you can keep using your Heroes in every attack even while they're upgrading. No more choosing between progress and firepower. That single change turns Hero upgrades from a painful sacrifice into a free lunch, and paired with this month's Dark Elixir discount, it's the best week of the year to finally close out those Hero levels you've been dodging.

Normally, the moment you start a Hero upgrade, that Hero is benched until the timer finishes. Upgrade your Archer Queen and you're attacking a Queen short for days — which, at higher Town Halls, basically means you stop three-starring until she's back.

The Unlimited Hero Event removes that restriction for the duration of the event. Your upgrading Hero still shows a timer, but they stay fully available on the battlefield. So you get all the attacking power of a maxed roster and the upgrade progress at the same time. It's the closest thing to a cheat code the game hands out, and it only comes around a few times a year. Supercell runs these Hero events as limited seasonal perks rather than permanent features, and you can always sanity-check the current schedule on the official Clash of Clans site. The takeaway is that this is a temporary window, not the new normal, so treat it like the rare opportunity it is instead of assuming you can upgrade Heroes freely whenever you like.

Because the downtime penalty is gone, your strategy should flip completely. Don't nibble on short upgrades — go straight for the longest, most painful Hero level you own. That week-plus upgrade you've been putting off for months? This is its moment.

The logic is simple. The event window is fixed, so the value you extract is measured in how much attack-time you save. A ten-day Hero upgrade saves you ten days of playing a Hero short; a one-day upgrade saves you one. Front-load the big ones. I always line up my most expensive Hero the night before an event like this so I can fire it off the second the discount goes live.

There's a mental trap worth naming here. In a normal week your brain treats a long Hero upgrade as "I lose this Hero for ten days," so you flinch and pick something shorter. This week that math is inverted — the longer the upgrade, the more free attack-time you bank. So the upgrade that feels the scariest is actually the smartest one to start. Push past the flinch and commit the big one early.

The Unlimited Hero Event doesn't run alone this month — it overlaps with the Summer Jam's Dark Elixir phase, and the two were made for each other. Heroes cost Dark Elixir, the Dark Elixir Quest cuts those upgrade times by 25%, and the Hero event lets you keep swinging while it all happens.

So the play is to farm Dark Elixir hard, dump it into your biggest Hero upgrade, and keep raiding without missing a beat. I broke down how to milk the Dark Elixir phase in the Dark Elixir Quest guide — run both events together and you'll get more Hero progress in one week than you normally would in three.

With downtime off the table, the answer is just "whichever Hero has the longest upgrade you can afford." But if two upgrades cost about the same, prioritize the Hero that carries your main attack — for a lot of players that's the Archer Queen or the Minion Prince, depending on your army.

One thing worth checking: your Hero equipment matters as much as the Hero level itself these days. If your Heroes are under-geared, that's sometimes the better Dark Elixir sink. I keep a running breakdown in the hero upgrade priority guide and the best equipment tier list, so check those before you commit a long upgrade to the wrong Hero.

If you're genuinely torn between two Heroes of similar cost, think about your defense too. A higher-level Hero doesn't just hit harder on offense — it also defends your base when you're raided, patrolling its corner and soaking attacks. So a Hero level pulls double duty. When I can't decide, I lean toward the Hero that guards the side of my base that leaks most often, because that upgrade quietly wins me defenses on top of the attacking boost.

A Book of Heroes instantly finishes a Hero upgrade, and normally that's the best way to skip the downtime pain. This week, though, the downtime pain doesn't exist — so a Book isn't buying you the same value it usually does.

My honest take: save your Books for a normal week, or for a war deadline where you genuinely need a Hero back immediately. During the Unlimited Hero Event, just let the timer run naturally while you keep attacking. The one exception is if you're right on the edge of unlocking a new Hero ability or a big power spike — then cracking a Book to hit that threshold faster can be worth it. Otherwise, patience is free this week.

Since your Heroes stay in play, there's no reason to slow down your raiding — and you'll want the loot anyway to fund the next upgrade. Keep farming Dark Elixir with a Sneaky Goblin army and claim your daily Star Bonus so your storages refill while your Hero cooks.

Just don't leave your own base soft while you're busy attacking. If you're sitting on a fat Dark Elixir pile between upgrades, run a layout that actually protects it. You can grab a resource-protecting base straight from our base finder and copy it into your game in under a minute, which is cheap insurance against losing a night's farming to a raid.

The Unlimited Hero Event is a short window, so it rewards a little planning. Before it wraps, make sure you've got your biggest Hero upgrade already running and enough Dark Elixir banked to start the next one the moment the first finishes.

And look ahead: Clan Games lands on July 22 and overlaps the end of this stretch, so once your Heroes are cooking you can pivot to grinding Clan Games challenges for even more rewards. Ride the Hero event for the free upgrades, then roll straight into the next event without losing momentum. That's how you turn a single good week into a genuine account jump. The habit that separates fast accounts from slow ones is never letting a Hero altar sit empty, so queue the next one the instant you can afford it.