Well, i have plenty of space for new applications, there are no limit how many i can add. The thing is that i don't know how to build any of those, but if you know other people that have built them, please give me link to the world and name. Maybe I can try to build pong if I get enough time, but since first release for beta testing is at December 1, i am kinda busy building cpu, ram, ssd, keyboard, adding applications, building gpu and screen, etc. But maybe it will come in version 1.1 or 1.2, if i have to build it myself. But again, it will most likely come in 1.0 if you have a link to a world that other people have built.
Space Invaders is Spoon3rs game, so i don't think I should just take it without his permission. If i ask him, and get his permssion to use it, that would of course be great, but there also another proble. If I remember correctly, the screen used in Space Invaders was HUGE. My screen will be 16:9 format of 32x18 pixels (1-LED Blocks). If the screen used in space invaders is bigger than this, I need that spoon3r is making a smaller version of it.