How to Get Free Gems in Doomsday: Last Survivors

Doomsday: Last Survivors is one of the most popular strategy survival games on mobile, blending base-building, PvP battles, and zombie defense. Like most mobile titles, progress depends heavily on gems, the game’s premium currency. Here are the main sources of gems: 

Complete Daily and Weekly Missions

Doomsday rewards consistent players. By completing your daily quests, you can earn cases that contain free gems and essential resources. The key is consistency: log in, complete your challenges, and collect the milestone rewards every week.

• Check your mission tracker daily.
• Focus on “combat” and “development” tasks for better gem returns.
• Join seasonal events for additional free rewards.

Participate in Alliance Events

Joining an active alliance is one of the easiest ways to earn gems. Alliance Wars, Group Rewards, Alliance Stores, and collaborative events often distribute gem bundles and premium items. The more active your alliance, the more rewards you will collect.

Use Money from Freecash to Buy Doomsday Gems

Freecash is a platform where you can earn money online by completing simple tasks from your phone, like testing mobile games and signing up for new apps. This will not replace a full-time job, but it is a fast and easy way to earn extra money you can use to buy Doomsday gems.

The average user earns 21 per day, and can withdraw their money using one of 21 different cashout methods, including PayPal and bank transfers.

Joining Freecash is completely free:

1. Sign up for Freecash, or log in instantly using Google or Facebook.
2. Go to the Earn page and choose a task you want to complete, such as testing a mobile game.
3. Start the offer using the green button in the pop-up and finish the task (mobile games usually require reaching a specific level)
4. When you're ready, go to the Cashout page and withdraw your money.
5. Use money from Freecash to buy as many Doomsday gems as you want!

It is simple and fun, but if you are unsure, check out our Trustpilot, where we have a 4.8 rating from over 255454 reviews.

Watch Ads or Answer Surveys for Gems

From time to time, Doomsday runs limited-time in-game events where you can earn a small amount of gems by watching ads or answering surveys. These offers appear directly inside the game and never require you to leave the app.

• Only available during specific events or special promos.
• You can often watch multiple ads until you hit a daily or event limit.
• Survey rewards vary significantly based on the offer.
• Rewards are granted instantly, with no codes or extra steps needed.

This is a good way to pick up quick, low-effort gem boosts whenever ad events are active.

Get Promo Codes from Social Media and Events

They regularly give out free Gems via official Doomsday announcements and community channels. 

• Codes are typically shared on Facebook, Discord, livestreams, and patch notes.
• They often give larger rewards than ads, around 50 to 500 gems, plus items like speed-ups, resources, or hero shards.
• Most codes are time-limited and may expire within days or weeks.

Follow the official Doomsday Facebook page to catch new promo codes before they expire.

Avoid Gem Generators and Hacks

Any site promising “free unlimited gems” through a generator or hacked APK is unsafe. These scams can steal account data, lock your device, or get your Doomsday account permanently banned. Stick to legitimate, risk-free methods like missions, alliances, codes, ad events, and Freecash.