It's not really a port, but I thought that the TI 99/4A clone called "TI Invaders" was very good.
Here is a video clip of it in action.
It plays very smoothly, and the invader models change as you progress. You can't go all the way to the edge, though.
Can we talk Space Invaders ports?
Re: Can we talk Space Invaders ports?
Systems: TI-99/4a, Commodore Vic-20, Atari 2600, NES, SMS, GB, Neo Geo MVS (Big Red 4-slot), Genesis, SNES, 3DO, PS1, N64, DC, PS2, GBA, GCN, NDSi, Wii
Re: Can we talk Space Invaders ports?
The 2600 version still has the best death sound and animation. I really miss that part.



