Waking Mars is an excellent indie game, it combines botany and exploration, all set on Mars. I recommend it to anybody that enjoys explorative adventure games.
I thought this was gonna be a dual shock 2 game... but It's so easy to play with mouse aiming... you should try wasd and a mouse for aiming. It will make it much easier when it gets more difficult.
I gave it a shot with wsad/mouse, didn't like it too much, Capsized on the other hand, has to played with mouse/keyboard
addendum: not to say I won't try again, it's just my current setup is wonky, I am using an older PVA panel TV that has piss poor viewing angle, so gaming on is kind of painful on the eyes, so I use my only 22" that is to the side, and trying to game on this tiny table with the kb/mouse shifted makes it very uncomfortable, that's why I chose to use my DS3. I'd use my other 22", but if failed spectacularly, after 13000+ hours on it, it just gave up.