Defend the cosmos from waves of alien invaders in this retro arcade shooter!

About

Cosmo Invaders is a classic Space Invaders-inspired game built with LOVE 2D. Blast through 10 increasingly challenging levels, face off against powerful bosses, collect power-ups, and climb the high score leaderboard.

Features

10 Levels of Action Progress through waves of enemies that get faster and smarter. New movement patterns unlock as you advance -- zigzag, wave, and mixed formations keep you on your toes.

4 Enemy Types

• Grunts -- standard enemies, 1 hit to destroy
• Tough -- armored enemies that take 2 hits
• Fast -- quick enemies that zip across the screen
• Tanks -- heavy enemies with 3 HP but slow movement

Epic Boss Fights Face powerful bosses at levels 5 and 10. Bosses fire aimed shots in phase 1, then unleash devastating spread attacks below 50% HP. Defeat them for guaranteed power-up drops and massive score bonuses.

4 Power-Ups

• Rapid Fire -- increased fire rate for 8 seconds
• Spread Shot -- 3-way bullet spread for 8 seconds
• Shield -- absorbs one hit for 10 seconds
• Bomb -- instantly destroys all enemies on screen

Combo System Chain kills within 2 seconds to build your combo multiplier up to x5. Higher combos mean bigger scores!

3 Difficulty Modes

• Easy -- slower enemies, less fire, 5 lives, 0.5x score
• Normal -- balanced challenge, 3 lives, 1x score
• Hard -- faster enemies, aggressive fire, 2 lives, 2x score

6 Ship Skins Customize your ship with 6 color options: Blue, Red, Green, Purple, Gold, and Cyan.

4 Visual Zones The universe changes as you progress:

• Deep Space (Lv 1-3) -- cool blue/green tints
• Amber Nebula (Lv 4-6) -- warm orange atmosphere
• Dark Void (Lv 7-9) -- purple/magenta haze
• Chaos Zone (Lv 10) -- intense red tints

Screen Effects Screen shake on impacts, particle explosions on enemy destruction, glowing bullets, and parallax scrolling backgrounds.

Persistent Progress High scores, settings, selected skin, and difficulty are saved between sessions.

Controls

• Arrow Keys -- Move ship / Navigate menus
• Space -- Fire / Select
• Escape / P -- Pause
• Enter -- Confirm

Credits

Developed by Itamde (me) Music: Jason Staczek - "Lumpy Gravy" SFX: Little Robot Sound Factory Background Art: Luis Zuno (@ansimuz) - CC0