RTG games and Demos in full screen?

[Dr.Bongo]

First, all the best for 2014 fellow Amigan's

Whenever I open RTG compatible games or demos on my A4k they always open at about a quarter of the screen size, which is kind of annoying. I've had a search and don't seem to be able to find a way to make them display in more of or all of the screen? is this just the way it is or am I missing something?

Software tried - Adoom , Payback, Bubble heroes - Various Demos.

Running an 060 Amiga 4000 with a CV643D , OS3.9 and CGX4

[Dr.Bongo]

WB is at 1024x768 , the screenmodes are in CGX.
For example - When I open ADoom I can select , say 800x600, and it opens at that resolution. It's just fills about a quater of the screen though.

[Dr.Bongo]

Ok, looking into screenmodes.... let's see.

@novacoder - If I wanted to play doom on a PC I could. Playing it on a PC emulating an Amiga isn't what I'm after at all. Thank you but, no.

[Dr.Bongo]

I think you're missing the point my friend....

Ah, with you. Thought you meant try newer hardware! (the first vid was winuae)
 Thank you for being polite in your response... looking into newer versions now