Gattai TD is a roguelike, mazing tower defense in which you merge towers and gain ancient wonders to hold back waves of cursed keepsakes.

<p class="bb_paragraph" ><span class="bb_img_ctn"><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3324380/extras/649dc3309ccd8cdda0ddfea685011e2c.poster.avif?t=1761195137" width=610 height=180 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3324380/extras/649dc3309ccd8cdda0ddfea685011e2c.webm?t=1761195137" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3324380/extras/649dc3309ccd8cdda0ddfea685011e2c.mp4?t=1761195137" type="video/mp4"></video></span></p><p class="bb_paragraph" ></p><p class="bb_paragraph" >A love note to old mazing TDs, Gattai TD forces you to adapt how and what you build each time you play. Start with a small defense that you must grow into a larger more powerful one. Each playthrough is a new experience with unique challenges. No single strategy will win every time—you must react wisely to what you are dealt in order to succeed!</p><h2 class="bb_tag" ><strong>Combine colors to form towers!</strong></h2><ul class="bb_ul"><li><p class="bb_paragraph" >Create towers by combining colored essence in different ways. Plan what towers you choose to merge them into, as different towers excel with different pathing layouts.</p></li></ul><h2 class="bb_tag" ><strong>Combine towers to form stronger towers!</strong></h2><ul class="bb_ul"><li><p class="bb_paragraph" >Combine towers together with other towers to form unique, more powerful variants. However, be careful, as the more powerful a tower is the more pivotal its position in your defense!</p></li></ul><h2 class="bb_tag" ><strong>Match your towers to items of power!</strong></h2><ul class="bb_ul"><li><p class="bb_paragraph" >Gain items that boost individual towers or your entire defense. These relics can result in powerful synergies or wasted potential.</p></li></ul>

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Gattai TD Achievements