Hi, I want to install Quake 3, OpenArena and irreco, but it seems i cannot, b/c they're considered as extras-devel apps. I know extras-devel can brick my device, so I'm trying to avoid devel packages. Is there any way to install these 3 apps without adding devel repository to App. manager?

Here's the steps I tried:
1) Downloaded packages via maemo.org/packages/ and irreco.garage.maemo.org
2) Tried opening them with File manager - No luck.
3) Tried sudo gainroot, then sudo dpkg -i packagename_here.deb - It didnt do anything.

So, is there any other way?