72%Strong matchX-Morph: Defense
91%3k91% positive reviews, Very Positive across 3k reviews·Tower Defense · Sci-fi
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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.
17.waves
SteamLevels 1, 3, 5 and 7 are fully playable either solo or online with friends.
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.

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.
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.
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.
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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.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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