Once it was intended to be a small endless space shooter, but now it's an epic endless shooter with awesome missions, fancy pixel graphics and nice unique ships to combat with.

Itch.io page:
https://luke100000.itch.io/nano-space

Features:

• 9 playable, unique ships with over 50 different levels and textures
• additional 12 different enemies and obstacles
• 14 missions with story
• 3 different endless levels
• nice pixel graphics, supported by some cool effects
• and it's getting more!

Best of all: it's completely free!