konsole_invaders is yet another clone, but it feels more action packed, because you have to keep tapping firing keys.

https://lh3.googleusercontent.com/-linHJ8U-yiQ/VprG3xL-3gI/AAAAAAAAI7g/UAxhakKSWis/s800-Ic42/konsole_invaders.gif

It supports WASD, HJKL, and arrow keys, plus Space for firing. It has scores, lives, and rockets. You get an extra life and rocket capacity once you clear a level or a wave of aliens. Detailed options for customize the gameplay, which can also be set with configuration file. Different types of alien ships, as deeper into levels, you get the stronger enemies.

Although, it looks good in many aspects, not so on other things. Such as big terminal size requirements, probably due to ASCII art of alien ships; and as you advance to later waves, you constantly have to press the firing key, if there was an auto-firing switch it would be much easier to play and for your wrist.

konsole_invaders was created by Fabian Ebner on 2011-08-17, written in C99 with terminal size 103x44+ under the GPLv3+, currently git-42b96db (2016-01-16)