So I've tried the game a few days ago, but still, I have yet to figure out on how to switch the game to fullscreen mode. Can someone please help? Thanks.

EDIT: I just found a fix for this problem. Sorry to those who were typing the solution for me. For the rest of you who have the same problem I had, may proceed to this link: http://mossmouth.com/forums/index.php?topic=3589.0

I tried spelunky, and watched an LP of abbey... neither are really for me. I like more strategy than action. I'll share another free game if you guys don't know about it. It's called Dungeon Crawl by Stone Soup

https://crawl.develz.org/

It's a rogue, with turn based play, and you develop your char by picking which skills you want to focus on, similar to NetHack. You can find tons of LPs to get a sense of gameplay if you're interested.

I would try to build Space Impact as I used to play it on my father's nokia1100.
Or may be Bounce.