Portal Sentinels

Hijack the enemy portals and strike the army before it reaches the tower.
Portal Sentinels is a dark fantasy 2D pixel‐art tower defense game that pits you against relentless waves of enemies. Build your defenses, shape the battlefield, and push back the darkness, alone or with friends.Portal Sentinels shifts the fight to the unseen battlefield between worlds. Once inside the portals, you must build mazes, place towers with precision, and push back against waves of enemies in ever-changing layouts. Each portal you secure reduces the flood attacking the tower, and might just tip the war in your favor.

• Classic Maze-Building Tower Defense
  Block paths and shape the enemy's route with grid-based tower placement. Create your own mazes or adapt to tight pre-designed layouts.
• Huge Variety of Handcrafted Maps
  From sprawling 200x200 grids to compact arenas with fixed paths, every map offers a unique strategic challenge.
• Choose your class with unique towers 
  Engineers specializing in physical might, Elementalists wielding nature’s fury and many more to come. With 4 base towers per class and 15 upgrade options per tower, every choice reshapes how your defenses behave, whether you need raw damage, control, or utility.
• Gems, Loot & Infinite Customization
  Defeat enemies, collect gems. Socket them into towers to reshape their damage, enhance control effects, add extra projectiles, switch damage types. Combine gem modifiers with upgrade paths to create uniquely powerful towers.
• Solo or Cooperative Mayhem
  Play alone if you prefer to strategize at your own pace. Or team up with friends in peer-to-peer multiplayer. Share responsibilities and craft defensive mazes together using synergizing classes.
• Void Armies with Unique Traits
  Face off against a growing bestiary of voidspawn, each with different movement styles, resistances, and surprises.
• A Tactical Spinoff in "The Nightwatch" Universe
  Play a vital support role in the war against the void, complementing the battle inside the tower with behind-the-scenes precision.
• Built for Classic Tower Defense Fans
  Inspired by the golden age of Warcraft 3 custom TD maps. No idle mechanics. No fluff. Just strategy, placement, and survival.
• Retro Pixel-Art Style
  Every map, tower, and enemy is rendered in clean, expressive pixel art that evokes classic fantasy strategy games.
• Endless ModeCleared the final wave but not ready to stop? Keep building, optimizing, and surviving in Endless Mode. An optional post-game challenge where the void keeps coming until your defenses finally fall.