Last Keep

The siege never ends. Enemies march on your castle, and you're the only cannon on the wall.

Drag to aim, and your cannon fires automatically. Every kill fills the Boom ring. When it's full, tap it to blast the whole battlefield. Between waves, spend your gold to upgrade the keep, then hold out for one more wave.

Features

• One-thumb, portrait-mode castle defense, built for phones
• 7 enemy types: grunts, runners, archers, knights, siege rams, suicide bombers and a siege tower boss every 5 waves
• Upgrade shop: repair and thicken your walls, heavier shot, faster loading, multishot and tower archers
• Combo multiplier: chain kills fast for bigger scores
• Power-up orbs: tap to grab Rapid Fire, Freeze or Heal before they vanish
• Cracking walls, flickering torches, a dusk sky and a synth soundtrack that speeds up as the waves get harder

Controls

• Touch / mouse: press and drag to aim, and the cannon fires on its own
• Boom ring: tap when it's full
• Orbs: tap to collect
• Mute: button at the top right (or M on desktop)

Theme

Castles: you defend one, and every upgrade makes your keep stronger.

Credits

Made for Slapjam AI in 48 hours.

• Code, game design, visuals (drawn in code) and music (generated in code): built with Claude (Anthropic) and Rosebud.ai for touching up and OpenCode