Stackwave Defense

**Stackwave Defense** fuses polyomino stacking with a tower-defense deck-builder. Drop Block modules from your deck to build defenses, clear lines for points, then fight off enemy waves trying to siege your home base.

### How it works

- **Build phase** — Draw 4 pieces from your 20-card deck and place them on the grid. Full rows clear for bonus points (and destroy towers in those rows).

- **Wave phase** — Each cell fights as a tower based on its card role. Enemies path toward your base; clear the wave to continue.

- **Shop every 5 waves** — Buy upgraded cards, redraw the shop, or fortify your base. Every purchase replaces a card already in your deck.

### Features

- 50-wave campaign, then endless mode

- 8 tower roles: wall, shooter, sniper, splash, slow, gunner, piercer, multishot

- 5 rarities with a shop that scales as you progress

- Multiple shape-restricted game modes

- Casual, Normal, and Brutal difficulty

- Role tutorials, daily seed runs, achievements, and local high scores

### Controls

**Keyboard:** Arrow keys / WASD to move & rotate, Space to hard drop, C to hold, F for wave speed, P to pause  

**Mouse:** Click HUD buttons; click damaged towers to repair during build  

**Touch:** Mobile tab bar for game, deck, and controls

### Tips

Protect your home base first — enemies siege it over time instead of ending the run instantly. Smart shopping and deck pruning matter more than perfect stacking after wave 10.

Runs entirely in your browser. No install required.