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Crazy Defense Heroes: How to play and earn

Assemble your NFT battle deck and fight off invading enemies in this upcoming play-to-earn tower defense game.


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  • Free to start playing
  • 4500 UPX signup bonus for Upland property NFTs
  • Buy and sell NFT properties
  • Earn crypto and USD in game

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Crazy Defense Heroes (CDH) is a traditional free-to-play mobile game that's part of the "Tower Experiment" initiative, which will soon release a play-to-earn version powered by blockchain technology.

Discover how you can start earning TOWER tokens as you battle formidable foes in CDH.

Crazy Defense Heroes highlights

  • Earn TOWER tokens for free
  • Monthly cumulative reward events
  • Game NFTs can be staked to earn TOWER tokens
  • Large, active player base
  • No entry barrier to play
  • Well-designed game mechanics with 1,000+ levels

What is Crazy Defense Heroes?

Crazy Defense Heroes (CDH) is a hugely successful strategy tower defense mobile game that's amassed over 2 million downloads. The title is a sequel and part of the Crazy Kings (CK) game franchise.

Crazy Defense Heroes serves as the basis for an upcoming tower defense blockchain game that's built on the Polygon network, which will utilize NFTs and TOWER — an ERC-20 token — in a play-to-earn gaming ecosystem.

Playing Crazy Defense Heroes

To start playing, assemble a battle deck from over 400 cards — which are not NFTs in the current mobile version — and battle fearsome hordes of fantasy creatures across 1,000 fun-filled levels in the realm of Evils.

Crazy Defense Heroes - Tower DefenseImage source: Crazy Defense Heroes

Each level is typically cleared in a few minutes, but it'll get progressively harder. So make sure to select the right cards and adjust your strategy to increase your chances of winning.

Conquering higher stages mean attaining better loot and unlocking rarer cards with different utilities. These cards are classified into various types, such as battle tower, instant weapons, support heroes and your main avatar.

Official trailer

Check out the official trailer for Crazy Defense Heroes.

What is TOWER token?

TOWER is the native utility token used within the Crazy Defense Heroes game as the basis for all the ecosystem's transactions and interactions. It's built on the Ethereum blockchain and is currently valued at $0.004678, according to CoinMarketCap on June 8, 2022.

Crazy Defense Heroes TOWER Token

Players use TOWER in three ways:

  • Purchase NFTs. TOWER can be used to purchase NFT assets within the Crazy Kings franchise.
  • Event entry. TOWER grants access to special events and certain gameplay modes, like tournaments.
  • Governance. TOWER holders can participate in the governance of the Crazy Kings franchise, such as submitting proposals for the games' direction and voting on these proposals.

How to buy TOWER token

Find an exchange to buy, sell and trade TOWER by comparing deposit methods, supported fiat currencies and fees. Select Go to site to sign up directly with the provider.

Name Product Deposit methods Fiat Currencies Cryptocurrencies Offer Disclaimer
KuCoin Cryptocurrency Exchange
Bank transfer, Credit card, Cryptocurrency, Debit card, P2P


Sign up through Finder and get a free 14-day VIP upgrade to reduce your trading fees. T&Cs apply.

How does play-to-earn work with Crazy Defense Heroes?

As Crazy Defense Heroes has yet to be a full-fledge blockchain game, the P2E features are somewhat limited at the time of writing. However, there are exclusive monthly events allowing players to earn TOWER tokens for their gaming efforts, such as the "Daily Star Chest" event.

Crazy Defense Heroes "Daily Star Chest" event

Here's how you can earn TOWER from this special monthly event:

  1. Download Crazy Defense Heroes. Be sure to bind your CDH User ID with your preferred login method.
  2. Link your CDH User ID to your Metamask Wallet via the TOWER Token website.
  3. Earn 16 stars from daily battles to claim a "Star Chest."
  4. Open your "Star Chest" and complete a calendar check-in on the TOWER Token website within the same day (UTC time zone).
  5. Complete this process every day to earn tower tokens.

Aside from the daily battles and calendar check-in, you'll also need to meet the following criteria:

  • Gain a minimum of 315,000 avatar Experience Points (XP) in Crazy Defense Heroes by the end of each month.

How many TOWER Tokens can I earn?

The rewards for each qualifying player are a shared amount of TOWER Tokens from a total reward pool, which may vary from month to month. For example, 1.8 million TOWER tokens were allocated in May 2022.

The exact amount of TOWER you earn depends on the number of players who meet the required monthly XP criteria. This reward is airdropped to your MetaMask wallet within two weeks after the month's end.

What are Crazy Defense Heroes NFTs?

Cards are the key gameplay components in the Crazy Kings franchise, each representing defensive structures, heroes, unique spells and equipment that are strategically used to prevent hordes of enemies from reaching your base.

Crazy Defense Heroes - Battle Cards

Image source: Crazy Defense Heroes

Crazy Defense Heroes - Card NFT

Each Game Card is a non-fungible, ERC-20 token that comes in various levels of power and rarity and is upgradable to ensure long-term progression. There are currently four rarity tiers:

  • Common
  • Rare
  • Epic
  • Legendary

How to buy Crazy Defense Heroes NFTs?

For now, you can only buy and sell Crazy Defense Heroes NFTs on, a secondary marketplace for trading NFTs. The current floor price for a Crazy Defense Heroes Card is 0.49 ETH.

In May 2021, Animoca Brands held two official TOWER Chest Sales, limited to 650 chests per round, in three tiers — Bronze, Silver and Gold — each containing three random TOWER Game Card NFTs.

The TOWER project also launched a series of NFT sales on Binance NFT on November 5, 2021, which includes TOWER Tickets and TOWER Mystery Boxes.

While these NFTs are not yet utilized in the Crazy Defense Heroes game, they have paved the way for the upcoming blockchain game.

Picture not described

Image source: Crazy Defense Heroes

Once the blockchain version of the game is launched, additional Crazy Kings franchise cards will be minted as NFTs and available for purchase with TOWER. In addition to being in-game assets and collectibles, all these NFTs are stakable to passively generate TOWER.

Compare marketplaces to buy game NFTs

Name Product Categories Blockchains Payment methods Platform Genre
Gala Entertainment
Gala Entertainment
Ethereum, Binance Smart Chain, GALA
Blockchain games
Blockchain gaming platforms where you can earn Gala and NFTs through playing.
Collectibles, Gaming, Trading cards
Cryptocurrency, PayPal
Browser, mobile
Trading card game (TCG)
Splinterlands is a digital, play-to-earn, collectible card game built on hive blockchain technology.
Browser, mobile
Racing, collectibles
A blockchain-based horse racing game featuring NFT horses, breeding and earning opportunities.
Sports, Collectibles, Gaming, Trading cards
Credit card, Debit card, Cryptocurrency, Bank transfer
Trading card and fantasy sports app
A fantasy football game with collectible NFT cards, officially supported by the biggest soccer leagues in the world.
Binance NFT Marketplace
Sports, Collectibles, Art, Gaming, Music, Trading cards, Domain names, Metaverse (Virtual Worlds), Memes, DeFi, Mixed
Credit card, Debit card, Cryptocurrency, Bank transfer
NFT marketplace
A peer-to-peer marketplace supported by one of the worlds largest cryptocurrency exchange, Binance. Not currently available to U.S. residents.

How to sell Crazy Defense Heroes NFTs

Currency, you can only sell your Crazy Defense Heroes NFTs on

Typically, selling an owned NFT on the secondary market requires a few simple steps:

  1. Connect wallet to OpenSea. Connect your crypto wallet to OpenSea. Many accept MetaMask.
  2. Make an account or sign in. Create an account if you need to, or simply sign in.
  3. Select the asset. In your account, view your assets and select the one you want to sell.
  4. Confirm the listing. Most secondary marketplaces allow for fixed-price sales or auction sales. Choose the fixed price or minimum bid and confirm the listing.

Most secondary marketplaces charge a marketplace fee and take a percentage of the final sale price — OpenSea takes 2.5% on each transaction. Additionally, there may be gas fees for listing an NFT, depending on your chosen marketplace.

About Crazy Defense Heroes game developers

The developer and publisher for Crazy Defense Heroes is Animoca Brands, a Hong Kong-based game software company and venture capital company founded 2014.

Animoca Brands is a leader in the field of digital entertainment, blockchain, and gamification. The company also has a broad portfolio of products and multiple subsidiaries, including The Sandbox, Blowfish Studios, GAMEE, Pixowl, nWay, Quidd, Bondly, Lympo, and Grease Monkey Games.

What to watch out for with Crazy Defense Heroes

As of June 8, 2022, the blockchain version of the TOWER project — which is based on the Crazy Defense Heroes (CDH) mobile game — has yet to be released and final gameplay details haven't been announced. However, players can expect its core gameplay to be similar to Crazy Defense Heroes, which is a relatively straightforward strategy game.

But before getting started with Crazy Defense Heroes, keep in mind that the floor prices for its NFTs are rather steep on the secondary market. Also, the game card NFTs can only be used in the upcoming blockchain version.

Bottom line

At the time of writing, the actual blockchain version of the TOWER project — which will be on PC — is still in the works. So players can only earn TOWER tokens from monthly cumulative events by playing the current version of Crazy Defense Heroes available on both the App Store and Google Play.

If you already own Crazy Defense Heroes NFTs or are looking to buy from the secondary market, they'll only be useable in the upcoming blockchain version of the game.

On the bright side, getting your feet wet in the current version of Crazy Defense Heroes allows you to gain invaluable insight into the game's mechanics, familiarize yourself with the battle card system and polish up your defense strategies. So you'll have less figuring out to do when the blockchain version goes live — while filling up your bags with TOWER tokens.

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