Bulwark

There is no build menu. You draw your defence onto the plate — a straight line inks in as a wall, a triangle as a ballista, a circle as a mortar pit, a zigzag as a tesla coil, a spiral as a slow field — and every pixel of line costs one ink. Ink is the whole economy: an economical drawing beats a sprawling one.

How it plays

• Five gestures, five structures. The classification and its cost read out live while you drag, and a stroke the recogniser rejects costs nothing.
• Your budget is drawn from the map: 1,200 ink plus 40 for every route cell past 28. Kills refund 8 per enemy tier, rubbing a shape out returns 60%, and Escape undoes your last line.
• Walls re-route. The path redraws live under your pen — one wall stretched it from 40 cells to 54. Seal the plate completely and the wave turns and attacks the wall instead.
• Ten waves, and each one arrives when you send it. Runners, 80 HP brutes, flyers that ignore walls outright, sappers that break off to chew on your towers. The objective holds 20 HP and every unit that reaches it costs one, so exactly twenty things may get past.

White ink on blueprint blue: a 40×24 draughting field with grid ticks, dimension arrows and a title block naming the plate by its seed. Every structure's range sits on the sheet as a dashed ring, enemies are the only warm hue, and a hit annotates itself like a revision note.