Skip to content
Geeky Alien
17.waves TD

Screenshots

17.waves TD screenshot 1
Teaser Trailer trailerWatch trailer on Steam ↗

17.waves TD

Peartree Games · Published by 2 Left Thumbs · Official site ↗

Positive — 90% positive (20 reviews) · 37 achievements

Last updated 27 Sept 2026

17.waves is an online co-op tower defense game for up to four players. Strategize with your teammates to build, upgrade, and maintain your towers to defend your base from hordes of invading aliens.

DJCTQ 6Co-opFull Controller Support

£6.69

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

3 Sept 2026Lowest: £6.69 · Highest: £6.699 Oct 2026

Action, Strategy · 2026 · More £5 - £15 games

Join forces with up to three friends in 17.waves TD for intense online co-op tower defense. Plan and adapt as you build and upgrade towers to withstand relentless waves of invading aliens, pushing strategy to the limit.

About this game

DEMO CONTENT

THIS DEMO IS PLAYABLY ONLINE WITH 1-4 PLAYERS

Levels 1, 3, 5 and 7 are fully playable either solo or online with friends.


About the Game

AN ONLINE CO-OP TOWER DEFENSE

The 17 colonies of Exo-Planet W4-V35 are under attack! Can you survive all 17.waves?

Assemble up to 4 friends online and defend each base from the incoming alien hordes. You must work together to collect coins, gather resources, and build/maintain your towers.

PROTECT THE COLONY

An alien threat -- Alien bugs are marching to your base! Learn their paths and make a plan.

Build towers -- Choose from a variety of tower types, and position them for maximum effectiveness.

WORK TOGETHER

Find your role -- Specialize each team member with 1 of 7 unique upgrades. Like Fleet Foot, Lode Lorde, or Overclock!

Mine resources -- Towers consume energy and need constant upkeep. Gather up and input resources to keep them operational.

FORTIFY YOUR DEFENSES

Gather coins -- Everything costs money! Coins are dropped by enemies, and will disappear if you don't get to them soon.

Upgrade -- Upgrade existing towers to improve damage and help fend off late-stage enemies.

--------------------------------------------

Know Before You Buy

17.waves uses a hosted join code connection system. Meaning there is no lobby for players to search for a game to join. One player will host and provide a unique code to others.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS: 10
  • Processor: i3
  • Memory: 2 GB RAM
  • Graphics: gtx 1050
  • Storage: 600 MB available space

Supported Languages

English, French, Italian, German, Spanish - Spain, Japanese, Korean, Polish, Simplified Chinese, Traditional Chinese, Portuguese - Brazil

Latest news

  • AnnouncementsOfficial

    17.waves is OUT NOW

    Grab 17.waves NOW for 30% OFF!!While the game can be played as a singleplayer, it was always envision as something you would play online with some buddies. We wanted to keep the price of the game low to keep the game accessible for groups of friends - and are offering 30% OFF at launch to encourage even more players to give it a try!We are so excited to see you all digging into the game, and putting your skills to the test as you work your way through all 17 levels. That's 289 waves to survive!!If you want to share feedback, report any bugs, or otherwise connect with ourselves and other fans of the game we recommend joining the Peartree Games Discord!BUNDLES?Looking to save a few dollars more? If you own either Paper Planet or Starground (both also galactic sci-fi co-op games from 2 Left Thumbs) then you're eligible for an additional 10% off at checkout!The Making of 17.wavesThe InspirationsWhen my now-wife and I first started dating, we used to play PixelJunk Monsters 2. We absolutely loved it, learning every level inside out: the routes, the enemy types in each wave, where and when to drop each tower, when to dance on one to upgrade it or tear it down for a coin refund. We'd pause the game, get up, walk right to the TV and point at build spots and enemy paths, strategizing every move like a couple of colonels drawing up a battle plan, making sure we had a perfect run on every difficulty before moving on. When we finished it, we went straight back to PixelJunk Monsters 1 and did the whole thing again. Then we played Overcooked! the same way, same obsession with efficiency, just a lot more frantic yelling.The ConceptWhat stuck with me wasn't how alike the two felt to play, but how different they felt in the moment. Monsters had all this downtime, especially mid-to-late game, dancing on towers, wandering around scooping up coins. Overcooked! never stopped; there was always something to do, always something to run to, right up to the final second. So near the end of t...
    Read full article on Community Announcements (2 Left Thumbs)
  • AnnouncementsOfficial

    Strategems Vol. 2

    Today kicks off Strategems Vol. 2 hosted by Goblinz PublishingA digital event focused on strategy and highly replayable titles.Find your next hidden gem, jump into exclusive demos, and explore the best the genre has to offer!LAUNCHTomorrow is the big day!!17.waves TD officially launches tomorrow!The game will only be $7.99 USD with a 30% launch discountWe wanted to keep the game affordable, as it is best played with a group of 4 friends. So please, pester your buddies and let them know you have a new co-op game you'd like to sink your weekend into. We're very excited for you all to finally play it in full!
    Read full article on Community Announcements (2 Left Thumbs)
  • Community & EventsOfficial

    Tower Defense Fest

    Thank you to Steam for organizing an official Tower Defense Fest! This is a wonderful, highly variable genre that easily feels worthy of dedicated celebration!2 Left Thumbs has 5 total games taking part, 4 of which are upcoming. Please check out this selection of other TD releases, as well as the full event for more great options!CardaverInspired by the lane-based tower defense gameplay of Plants vs Zombies, Cardaver puts a deckbuilding roguelike twist on the formula. This highly replayable strategy game should be equally enjoyable to both those who are and are not familiar with the PvZ inspirations.CastillonInspired by a variety of strategy genres, Castillon looks to create a unique experience within familiar mechanics, brought together in unique ways. Party base-builder, RTS, and TD this game should appeal to a wide range of strategy fans.Paper PlanetThe only released games on this list, Paper Planet is a chaotic roguelike with scaling enemies and attacks that will often fill the screen. See what sort of insane combos you can achieve! And if you wish, you can bring in up to 3 friends for some local co-op carnage!Storm The House CollectionStorm The House was a trilogy of popular, fixed-position defense games of the Flash era. One of the pioneers of this subset of Tower Defense games, Storm The House is a simple game with an addictive gameplay loop, remastered with modern conveniences.
    Read full article on Community Announcements (2 Left Thumbs)
  • AnnouncementsOfficial

    2026 Publisher Sale

    Today kicks off the big 2 Left Thumbs Publisher Sale!Explore the full event page to scope out loads of discounts, free games, bundles and more! NEW RELEASEYesterday saw the release of Underboard, a new team-based tactical roguelike autobattler!(The lead artist of which did the awesome custom art for this sale!)COMING SOON 4 more games have received official release dates! Each of which offers a public demo.Dice A Million - Dice-rolling Deckbuilder Roguelike - February 25thCrawling Angels - Physics-based Puzzle Horror - March 13thWasteland Bites - Survival Horror Food Truck Manager - April 3rdBesmirch - Survival Horror Farming Sim - May 11thWHAT ELSE?There were too many announcements this year to include in store page post.Check out this news post with EVERYTHING related to this year's 2 Left Thumbs sale!FOLLOW ALONGFollow 2 Left Thumbs on social media to stay up-to-date on all the latest games and news. 👇BlueskyTikTokInstagramYouTubeDiscordTwitter
    Read full article on Community Announcements (2 Left Thumbs)
  • AnnouncementsOfficial

    Play the FULL GAME for FREE!

    FULL GAME PlaytestWe've been hard at work to make 17.waves the best it can be! The next step is for us to put the game in the public's hands to get their honest opinions. While debating what content would be best to include in this playtest, we decided, "Why not ALL of it?!"From today until September 15th you can play 17.waves in its entirety, with full online multiplayer support! This is made available through a Public Playtest here on Steam.How to JoinAnyone who had previously registered for the playtest will now automatically be granted access. Anyone new simply needs to click the green "Join The Playtest" button the the game's store page.(This isn't the actual link. Just a screenshot so you know what to look out for)FeedbackWhile you have no obligation, our primary goal here is to engage you all, and gather up as much feedback as can heading to a final release. Any feedback you can give would be immensely helpful! We'd like to offer a variety of options to accommodate your own preference:Leave a review on the Public Demo or drop feedback in the Steam DiscussionsJoin the Peartree Games Discord to chat directly with the developerFill out our Google Form if you prefer something more formal (est. 5-10 minutes)Thank You!We can't thank you enough for your interest in our game, and for taking the time to share your thoughts. If we could ask on more favour of you, it'd be that you please add 17.waves to your Wishlist!
    Read full article on Community Announcements (2 Left Thumbs)

We use strictly necessary cookies to run this site. We don't currently set any analytics or advertising cookies. See our Cookie Policy for details.