Web3 gaming · Best list
Best Play-to-Earn Games in September 2021: What Still Matters
September 2021’s play-to-earn boom was led by games such as Axie Infinity, Splinterlands, Alien Worlds and Gods Unchained. Here’s what made them stand out—and how to judge similar games in 2026 without mistaking token rewards for reliable income.
By the SkyBitcoins editorial team · Updated

Which play-to-earn games stood out in September 2021?
If you’re looking back at September 2021, the games most associated with the play-to-earn boom include Axie Infinity, Splinterlands, Alien Worlds and Gods Unchained. Each offered a different mix of gameplay and blockchain assets; none made earnings dependable. This is a historical shortlist, not a claim that these are the best games to start today.
“Best” depends on what you wanted: a competitive card game, a creature battler, or a lighter activity tied to tokens. In 2021, players often focused on token rewards and asset prices. A safer comparison also asks whether you would enjoy the game without rewards, what it costs to get started, and whether you can sell or withdraw assets when you want to.
The 2021 boom is not a guide to current availability or returns. In 2026, check each game’s current rules, supported networks, fees and withdrawal conditions before connecting a wallet. If any of those are unclear, pause rather than treating old popularity as proof that a game is still active or worthwhile.
Was Axie Infinity worth trying during the 2021 boom?
Axie Infinity was one of the defining games of the 2021 play-to-earn wave. It centered on collecting and battling Axies, blockchain-based creatures, and its economy connected gameplay with tradable assets and tokens. Players could compete and pursue rewards, but the value of those rewards depended on the game economy and token markets—not simply on time spent playing.
The biggest drawback for a new player was the cost and complexity of entry. Access could involve obtaining NFTs, setting up a compatible wallet and understanding the game’s blockchain arrangements. Some players used scholarship arrangements, but those came with their own terms and were not a guaranteed or risk-free shortcut.
Before trying Axie Infinity in 2026, check that the game mode and reward path you care about are currently available. Confirm what assets you need, where they can be traded, and what fees apply to transfers or withdrawals. Don’t buy creatures or tokens because you expect a particular return. If you wouldn’t play without the chance of earning, consider whether the risk is worth it.
Did Splinterlands suit card-game players?
Splinterlands appealed to players who preferred strategic card battles. Its collectible cards could be represented as digital assets, giving players a game loop built around assembling a deck and competing, alongside the possibility of trading eligible cards. That made it a more natural fit for card-game fans than a game whose main draw was farming or mining.
The important distinction is between winning matches and making money. A strong deck might help you compete, but buying cards did not guarantee rewards or resale value. Card demand, game rules and marketplace conditions can change. Some cards may also have restrictions or different utility, so never assume that every item is equally useful or easy to sell.
If you’re considering it now, first try the available free or low-cost options, if offered, and read the current card and marketplace rules. Add up the purchase price and any network or marketplace costs before paying. Treat collectible cards as game items with uncertain resale value, not as savings. If the game no longer suits your interests, don’t keep spending just to chase losses or recover earlier purchases.
What made Alien Worlds different from other 2021 picks?
Alien Worlds stood out for offering token-linked activities in a science-fiction setting. Players could take part in mining and other game activities connected to the TLM token and WAX-based NFTs. Compared with a demanding competitive game, its appeal included a relatively accessible, activity-based loop—but “easy to start” is not the same as “easy to profit.”
A token reward only has value you can realize if there is a functioning way to use or trade it, enough market demand, and a withdrawal route that works for you. Wallet permissions and NFT transactions also introduce risks beyond those of an ordinary browser game. A reward display is not the same as money in your bank account.
In 2026, verify that the game’s current activities, token utility and asset markets are operating as you expect. Read wallet prompts carefully and avoid approving permissions you don’t understand. Start without spending where possible. The Alien Worlds listing describes WAX-based NFT games and TLM activities, but you should check current costs and permissions directly before acting; don’t assume that 2021 reward mechanics or values still apply.
Why did Gods Unchained appeal to trading-card fans?
Gods Unchained brought collectible-card battles to a blockchain game. Its appeal was the chance to play a familiar competitive format while cards could have digital ownership or trading features. That combination made it a prominent alternative for players who wanted card strategy rather than creature breeding or token-focused mining.
Ownership claims deserve careful reading. A card being represented as a blockchain asset does not mean it will always be valuable, transferable on every platform, or useful under every version of the game. Game balance changes can affect a card’s play value; marketplace demand can affect its resale value. Those are separate risks.
Before paying for cards, check which game modes are available without a purchase, what the current marketplace rules are and what fees you might pay to move assets. Make sure the account or wallet setup is one you can secure and recover. Don’t spend more than you can afford to lose, and don’t treat an old reputation for play-to-earn as proof of current rewards. If the card game itself doesn’t appeal to you, a possible token feature is a poor reason to buy in.
Were The Sandbox and Decentraland really play-to-earn picks?
The Sandbox and Decentraland often entered conversations about crypto gaming in 2021, but they were not interchangeable with a game that paid players for ordinary matches. Both are virtual-world projects built around user-created experiences and digital assets. Buying land or other items is an investment-like activity, not a dependable way to earn by playing.
Timing matters, too. The Sandbox Alpha Season 3 ran throughout September 2022, so it should not be presented as a September 2021 event. Decentraland offered an Ethereum virtual world, but exploring it for free is different from making a profit; purchases and blockchain activity can involve costs and risk.
If you’re interested in these worlds in 2026, start by exploring without buying anything. Decide whether you want to create, socialize or visit user-made spaces, then check the current price and transaction costs for any asset you’re considering. Never buy virtual land because someone promises it will appreciate or produce income. These projects can be relevant to crypto gaming, but they answer a different question from “Which games paid players in September 2021?”
How should you compare the costs and risks?
The 2021 games differed in the way they combined play and blockchain assets. Use this comparison as a guide to their models, not as a current earnings ranking.
| Game | Main draw | What to examine before spending |
|---|---|---|
| Axie Infinity | Creature battles and collectibles | Entry assets, wallet setup, current reward rules |
| Splinterlands | Competitive card battles | Card utility, marketplace rules and fees |
| Alien Worlds | Mining and token-linked activities | Token use, NFT costs and wallet permissions |
| Gods Unchained | Strategic card play | Free options, card rules and trading costs |
Before committing money, ask yourself:
- Would I play this if there were no rewards?
- Can I start without buying an NFT or token?
- What fees apply when I buy, trade or withdraw?
- Can I explain what wallet permissions I’m approving?
- Is there a clear way to stop playing and secure or move my assets?
If you can’t answer those questions, don’t make a purchase yet. A game’s token price can move independently of its gameplay, and market liquidity can disappear or shrink. Count both your spending and the time needed to earn rewards; a displayed reward total does not show what you can actually withdraw.
How can you try a play-to-earn game more safely in 2026?
If you want to try a crypto game in 2026, begin with the game, not the promised yield. A free-to-start option can let you judge whether the experience is enjoyable before you take on wallet or marketplace risk. For example, Sunflower Land is described as a free-to-start farming game that can be tried without a wallet; verify its token name and network before moving assets. Alien Worlds is another possible follow-up, but check its current activities and permissions first.
Use this checklist before connecting a wallet or paying:
- Find the current game rules and the exact network it uses.
- Confirm every asset or token you must buy, plus transaction and marketplace costs.
- Check whether rewards can actually be withdrawn or traded where you live.
- Use a separate wallet for experimentation and never share its recovery phrase.
- Read each approval before signing; reject prompts you can’t explain.
- Stop if the game pressures you to spend more to recover earlier costs.
Avoid mistakes that turn entertainment into an uncontrolled financial bet: borrowing to buy game assets, trusting guaranteed-return claims, or assuming that a popular game from 2021 still works the same way. Set a spending limit before you start, and treat any money spent as at risk.
Frequently asked questions
What was the biggest play-to-earn game in September 2021?
Axie Infinity was among the most prominent play-to-earn games during the 2021 boom. That popularity did not make its rewards stable or guarantee that players would recover the cost of entry.
Could you earn crypto in Alien Worlds in 2021?
Alien Worlds was a prominent blockchain game of that period, with mining and token activities. In 2026, check that the game and its current reward mechanics are still active before connecting a wallet or spending.
Were play-to-earn games free to play in 2021?
Some games had free ways to start, while others required NFTs, card purchases or other upfront spending. Even a free entry did not mean that rewards were guaranteed or that cashing out would be simple.
Could play-to-earn games provide reliable income?
No. Token prices, game rules, player demand and transaction costs could all affect the value of any rewards. Treat gameplay as entertainment and count any money spent as money you could lose.
Was The Sandbox a top play-to-earn game in September 2021?
The Sandbox was discussed as a metaverse and game-building project, but its Alpha Season 3 ran in September 2022, not September 2021. It is misleading to list that later event as a September 2021 play-to-earn option.
Mentioned in this guide
dApps in this guide
Alien Worlds offers WAX-based NFT games and TLM activities, but check costs, rewards and wallet permissions before you start.
Decentraland lets you explore a user-created Ethereum virtual world for free, but purchases and blockchain activity carry costs and risks.
Sunflower Land is a free-to-start farming game; try it without a wallet, but verify its token name and network before moving assets.
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