Bitcoin created millionaires, Ethereum launched an entire new industry, and several cryptocurrencies managed to grow by thousands of percent in just a few years. The other side of the market is considerably darker. Some projects cost investors billions of dollars, others dropped by more than 99%, and several ended up as textbook examples of fraud. We’ve selected ten investments where the dream of quick wealth turned into one of the most expensive lessons in cryptocurrency history.
Table of Contents:
- How Did We Select the Worst Crypto Investments?
- 1. Terra LUNA: $40 Billion Vanished Within Days
- 2. OneCoin: The Cryptocurrency That Wasn't Actually a Cryptocurrency
- 3. FTX Token: From $84 to a Few Cents
- 4. BitConnect: The Legendary Promise of Easy Returns
- 5. Celsius: "Unbank Yourself" Ended in Bankruptcy
- 6. SafeMoon: The Name Promised a Safe Trip to the Moon
- 7. Internet Computer: One of the Most Brutal Debuts in History
- 8. IRON Titanium: From $64 to Practically Zero
- 9. Filecoin: A Great Story Doesn't Guarantee a Great Price
- 10. Axie Infinity: When the Play-to-Earn Fever Ended
- What Do the Worst Crypto Investments Have in Common?
- The Biggest Mistake Wasn't Always Choosing the Wrong Project
How Did We Select the Worst Crypto Investments?
A percentage drop alone isn’t enough. There are thousands of insignificant tokens on the cryptocurrency market that have lost virtually 100% of their value. In this ranking, we therefore combine the size of destroyed capital, the price drop from all-time high, the number of affected investors, and the significance the collapse had for the entire cryptocurrency market.
Some entries are still functioning projects today that simply extremely disappointed investors buying at the peak. Others ended in bankruptcy or criminal proceedings. This is also why a high historical decline in itself is not proof of fraud.
| Rank | Project | What Happened | Scope of Problem |
|---|---|---|---|
| 1. | Terra / LUNA + UST | Collapse of algorithmic stablecoin | over $40 billion USD in destroyed market value |
| 2. | OneCoin | Global cryptocurrency scam | over $4 billion USD deposited by victims |
| 3. | FTX Token (FTT) | FTX collapse and fraud exposure | FTT approximately −99.8% from ATH |
| 4. | BitConnect (BCC) | Ponzi scheme | approximately $2 billion USD from investors |
| 5. | Celsius (CEL) | Bankruptcy and token manipulation | $4.7 billion USD in assets were inaccessible when frozen |
| 6. | SafeMoon | Project collapse and fraud | billions of USD in market value vanished |
| 7. | Internet Computer (ICP) | Extreme drop after launch | approximately −99.7% from ATH |
| 8. | IRON Titanium (TITAN) | DeFi “bank run” | from over $64 USD nearly to zero |
| 9. | Filecoin (FIL) | Brutal valuation reality check | approximately −99.7% from ATH |
| 10. | Axie Infinity (AXS) | Collapse of play-to-earn boom | approximately −99.5% from ATH |
1. Terra LUNA: $40 Billion Vanished Within Days
As recently as early 2022, the Terra ecosystem represented one of the biggest stars in decentralized finance. Its foundation was the algorithmic stablecoin TerraUSD (UST), which was supposed to maintain a one-dollar price through a mechanism linked to the LUNA token. Additionally, the Anchor protocol lured users with yields around 20%.
In May 2022, the entire mechanism fell apart. UST lost its peg to the dollar, and attempts to restore its price led to massive minting of LUNA tokens. Hyperinflation followed, along with a virtually complete price collapse. The SEC later stated that the ecosystem collapse wiped out more than $40 billion in market value. The original LUNA, now known as Terra Luna Classic, had reached an all-time high of $119.18 USD in April 2022.
Terra is perhaps the most significant reminder that the label “stablecoin” itself does not mean a safe asset. When confidence in UST collapsed, the entire economic model practically fell apart within a few days.
2. OneCoin: The Cryptocurrency That Wasn’t Actually a Cryptocurrency
OneCoin represents an even more extreme case. Investors didn’t buy a blockchain project that later failed. The blockchain on which OneCoin was supposed to operate was not in reality what it was presented to investors as being.
The project founded by Ruja Ignatova and Karl Sebastian Greenwood was promoted through a global MLM network as a future competitor to Bitcoin. According to the U.S. Department of Justice, more than 3.5 million victims deposited over four billion dollars into it. Greenwood was subsequently sentenced to 20 years in prison, and U.S. authorities continued the victim compensation process even in 2026. Ignatova remains one of the most well-known wanted figures in cryptocurrency history.
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3. FTX Token: From $84 to a Few Cents
FTX was still considered one of the world’s most significant cryptocurrency exchanges in 2022. With its growth, the native FTT token also grew, reaching an all-time high of approximately $84.18 USD in September 2021.
Then came November 2022. FTX went into a liquidity crisis within days, halted withdrawals, and declared bankruptcy. Subsequently, the misuse of customer funds came to light. Founder Sam Bankman-Fried was sentenced to 25 years in prison; the U.S. Department of Justice stated that he misappropriated billions of dollars of customer funds, and the fraud involved more than eight billion dollars of client money.
FTT never recovered from the collapse. As of August 18, 2026, it trades around $0.20 USD, approximately 99.8% below its all-time high. An investor who put $10,000 into FTT at the peak would, in a simple price comparison, hold tokens worth only about $24.
4. BitConnect: The Legendary Promise of Easy Returns
“BitConneeeeeect!” is one of the most famous moments of early cryptocurrency culture. But behind the internet meme was one of the biggest disasters of the 2017 bull market.
BitConnect offered a lending program and told investors that its proprietary trading bot could generate extraordinarily high returns. According to the U.S. SEC, however, it was a global scam in which small investors were defrauded of approximately two billion dollars.
The BCC token reached approximately $470 during the cryptocurrency frenzy but practically collapsed after the lending platform closed. BitConnect became synonymous with one of crypto’s most important investment lessons: if someone promises extraordinarily high and nearly risk-free guaranteed returns, the promise itself is reason for extraordinary caution.
5. Celsius: “Unbank Yourself” Ended in Bankruptcy
Celsius Network presented itself as an alternative to the traditional banking system. Users could deposit cryptocurrencies and earn interest, while the native CEL token formed an important part of the platform’s economy.
In June 2022, Celsius halted withdrawals. At that time, hundreds of thousands of customers had approximately $4.7 billion in cryptocurrencies on the platform, which they could not access. A month later, the company declared bankruptcy.
Founder Alex Mashinsky later pleaded guilty to fraud and market manipulation and received a twelve-year sentence in 2025. The Department of Justice stated that Celsius spent hundreds of millions of dollars buying CEL, which artificially supported its price.
The CEL token once reached $8.05 USD. In 2026, its price hovers around approximately one cent, nearly 99.9% below its peak.
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6. SafeMoon: The Name Promised a Safe Trip to the Moon
SafeMoon became one of the symbols of the speculative frenzy of 2021. The project used unusual tokenomics designed to penalize selling and reward long-term holders. Social media helped its popularity, and the name itself perfectly matched the prevailing belief that cryptocurrency prices could only rise.
According to the SEC, SafeMoon’s market capitalization grew to over $5.7 billion. The regulator later accused the project and its leadership of widespread fraud, in which billions of dollars in market value were destroyed and over $200 million in crypto assets were allegedly extracted from the project.
The story continued into court. In February 2026, former CEO Braden John Karony was sentenced to 100 months in prison; the U.S. Department of Justice stated that he obtained more than nine million dollars in crypto assets from the fraud.
The SFM token in 2026 is approximately 100% below its all-time high of $0.003383 USD. Its market capitalization has dropped below one million dollars.
7. Internet Computer: One of the Most Brutal Debuts in History
Unlike previous projects, Internet Computer (ICP) is not a story of criminal prosecution or bankruptcy. It’s an example of what can happen when an investor buys a technologically ambitious project at an extreme price.
ICP entered major exchanges in May 2021 to enormous investor interest. CoinGecko records an all-time high of $700.65 USD on May 10, 2021. In August 2026, the token trades at approximately $2.27 USD. This represents a drop of around 99.7%.
The project still exists and its technology continues to develop. For an investor who bought near the initial price peaks, however, this offers little consolation. An investment of $10,000 at the peak would, in a simple price comparison, correspond to only approximately $32.
8. IRON Titanium: From $64 to Practically Zero
If we’re looking for one of the fastest collapses in decentralized finance history, IRON Titanium Token (TITAN) is a strong contender.
TITAN was part of the Iron Finance ecosystem and reached over $64 in June 2021. However, subsequent panic around the IRON stablecoin mechanism triggered a massive selloff. The economic mechanism could no longer handle the pressure and TITAN’s price practically collapsed within an extremely short time.
CoinGecko records TITAN’s all-time high at $64.19, while today’s values are deep in the fractions of a billionth of a dollar territory.
It’s a textbook example of DeFi tokenomics risk: a system can function perfectly during periods of growth, but its true resilience only shows when everyone tries to exit simultaneously.
9. Filecoin: A Great Story Doesn’t Guarantee a Great Price
Filecoin (FIL) is an interesting case because it’s not a failed or dead project. The network has a clear purpose – decentralized data storage – and continues to operate. From the perspective of an investor buying at the peak, however, its token ranks among the worst major investments of the previous cycle.
FIL reached an all-time high of $236.84 in April 2021. In summer 2026, the price hovers around $0.72, representing a loss of approximately 99.7% against its all-time high.
This demonstrates another unpleasant characteristic of cryptocurrency investments. A project doesn’t have to disappear, management doesn’t have to end up in prison, and the blockchain can continue functioning – yet an investor can still lose practically all their capital if they bought the token at a valuation that future demand couldn’t justify.
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10. Axie Infinity: When the Play-to-Earn Fever Ended
In 2021, Axie Infinity became a symbol of the play-to-earn concept. Players purchased NFT Axies characters, battled with them, and earned cryptocurrency rewards. In some countries, an entire economy of players and so-called scholarship programs emerged around the game.
With growing popularity, the governance token AXS also skyrocketed, reaching an all-time high of $164.90 in November 2021. Five years later, its price hovers below one dollar. Against the all-time high, this represents a decline of approximately 99.5%.
Axie Infinity hasn’t disappeared. The problem was in the expectations investors placed in the play-to-earn economy. Once the growth of new players slowed and returns ceased to be so attractive, the model based on constant inflow of participants hit harsh economic reality.
What Do the Worst Crypto Investments Have in Common?
At first glance, Terra, OneCoin, Filecoin, and Axie Infinity are almost incomparable. One project was destroyed by flawed tokenomics, another was a scam, another still operates a functional blockchain, and another simply failed to meet investor expectations.
Nevertheless, several motifs regularly repeat. Extremely high yields, complicated tokenomic mechanisms, dependence on constant inflow of new money, aggressive marketing, and valuations based more on narrative than current use were present in many of the biggest catastrophes in cryptocurrency history. Terra offered investors nearly 20% yield on UST, BitConnect promoted extraordinary returns from an alleged trading bot, and Celsius created an image of a safe alternative to the banking system.
However, there’s one more important lesson: a 99% drop is not the same as a 50% drop twice. If an asset loses 99% of its value, it must subsequently grow by 9,900% just to return to its original price. An investor who bought a token for $10,000 and is left with $100 in capital doesn’t need “a small comeback.” They need a hundred-fold increase.
The Biggest Mistake Wasn’t Always Choosing the Wrong Project
The stories of ICP, Filecoin, or Axie Infinity also demonstrate something perhaps even more important. Good technology doesn’t automatically mean a good investment. Even a functional project can be a catastrophic purchase if an investor pays a price based on an almost perfect future scenario.
Cryptocurrency history is therefore full of projects whose holders weren’t wrong that the blockchain or application would survive. They were wrong about how much they paid for its future.
And that’s perhaps the biggest common denominator of this entire ranking. The worst investments often don’t look dangerous at the moment of purchase. On the contrary. They usually look like an opportunity that an investor simply can’t afford to miss.
